E. Marten

You need to use WordPress SEO by Yoast (Props to him!)
Adds “More Sitemaps” to your WordPress SEO Settings. If you are using a second WordPress-Installation in a subdirectory, you can now easily add the second Sitemap into the main one.
If you are using a second WordPress-installation in a subdirectory and want it to be fully integrated it into your main site to prevend struggeling with two or more Sitemaps in your Webmastertools, 
you can easily integrate more sitemaps into your main one. (sitemap_index.xml) 
The Plugin adds your second and third (aso) sitemap into the main sitemap and tooks care about the modification date automatically!
Thanks to Joost de Valk!

IsSiY (Include second Sitemap into Yoast) WordPress SEO Extension

Adds "More Sitemaps" to your Wordpress SEO Settings. Include differen sitemaps to your sitemap_index.xml

WP Grim

Boost SEO 🚀 with powerful XML, HTML, Image, Video & Google News sitemaps for better search engine indexing.
<h3>XML Sitemaps</h3>
Google XML Sitemaps Generator is a WordPress Sitemap plugin that improves your website’s SEO by creating special XML Sitemaps for Search Engines like Google, Yahoo, Bing, Ask.com, and Yandex to index your site faster.
This plugin generates detailed XML Sitemaps that include your website’s Pages, Posts, Custom Posts, and Taxonomies, enhancing your website’s Search Engine Optimization (SEO) score. Plugin offers following Sitemaps:
<ul>
<li>General Sitemap – single XML Sitemap with all important links</li>
<li>Google News Sitemap – optimized for fast news indexing and higher visibility</li>
<li>Sitemap Index – organize multiple sitemaps in one index for better structure</li>
<li>Image Sitemap – improve indexing of images, galleries, and media content</li>
<li>Video Sitemap – help Google discover and rank your video content faster</li>
<li>Multilingual Sitemap – fully compatible with WPML, Polylang, and TranslatePress</li>
<li>WooCommerce Support – includes products, categories, and tags in sitemaps</li>
<li>Customizable Control – exclude specific posts, pages, or taxonomies; add custom URLs; set priority and frequency rules</li>
<li>SEO-Friendly & Performance Optimized – built-in caching system, robots.txt integration, WP-CLI commands, and seamless compatibility with popular SEO plugins (Yoast, Rank Math, The SEO Framework)</li>
</ul>
⭐ <a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=documentation&utm_campaign=xml_sitemap" rel="nofollow ugc">Dynamic XML Sitemaps Generator for Google PRO</a> 
⭐ <a href="https://wpgrim.com/docs/google-xml-sitemaps-generator/general/settings/?utm_source=wordpressorg&utm_medium=documentation&utm_campaign=xml_sitemap" rel="nofollow ugc">Documentation</a>
<h3>Sitemap Structure</h3>
The plugin offers two primary XML Sitemap structures: Single Sitemap and Sitemap Index. The Single Sitemap displays all your website’s content in a single XML Sitemap, while the Sitemap Index shows multiple XML Sitemaps in a single Sitemap Index.
Sitemap Index feature enables you to manage your sitemaps with Multiple Inner Sitemaps for various content types such as Pages, Posts, Custom Posts, Images, Videos and more. This feature makes easy the management of your Sitemaps and keep them organized.
<h3>Google News</h3>
Make your website’s News easily discoverable by Search Engines with Google News feature. By enabling “Google News” in the settings, a dynamic <a href="https://developers.google.com/search/docs/crawling-indexing/sitemaps/news-sitemap" rel="nofollow ugc">Google News Sitemap</a> will be created automatically. Google News Sitemap is fully compatible with popular multilingual plugins like WPML, Polylang, and TranslatePress.
The Google News Sitemap includes all the required fields such as Publication Name, Language, Title, and Publication Date. Additionally, it is fully compatible with the Google Publisher Center sitemap protocol, ensuring that your website’s content is properly indexed and displayed in Google News.
<h3>Image Sitemap</h3>
The Dynamic Image Sitemap is a valuable tool for optimizing website indexing and search engine visibility. By including images from Pages, Posts, and Custom Posts Content, it offers a comprehensive representation of visual content on your site. Additionally, its adherence to the <a href="https://developers.google.com/search/docs/crawling-indexing/sitemaps/image-sitemaps" rel="nofollow ugc">Google Image Sitemaps</a> structure ensures compatibility and optimal performance within the search engine ecosystem.
<h3>Video Sitemap</h3>
Video Sitemap will also be dynamically generated using collected Videos from Pages, Posts, and Custom Posts Content that contains Playlist Shortcode or tag nd fully compatible with <a href="https://developers.google.com/search/docs/crawling-indexing/sitemaps/video-sitemaps" rel="nofollow ugc">Google Video Sitemaps</a> structure. Title, Thumbnail, Description, and Duration fields will be respectively generated from Video Attachment’s Title, Featured Image, Caption, and Length.
<h3>Custom Sitemap URLs</h3>
Customizing your XML Sitemap is ease with Custom Sitemap URLs feature. You can add External or Internal URLs to your XML Sitemap under the Plugin Settings, making it easy to customize your XML Sitemap to fit your specific needs. Also, you can add Custom Sitemaps to the Sitemap Index, if you have Static or Additional Sitemaps.
In addition, Google XML Sitemaps Generator plugin allows you to display a Sitemap under a Custom URL on your website, providing an additional level of customization.
<h3>Sitemap Options</h3>
This plugin provides you with a very simple and clean UI to set Priority, Frequency options and easily Include/Exclude Pages, Posts, Custom Posts, Archives, Authors, Categories, Taxonomies and Tags into your Sitemap.
<h3>Cache</h3>
The WordPress XML Sitemap plugin comes equipped with a Cache feature that automatically caches Sitemap Data when a user visits the Sitemap page. This means that subsequent visits to the sitemap page will be faster as the cached data is quickly retrieved instead of generating the Sitemap from scratch.
Cache feature also includes options to set a Caching Timeout, view the Last Cached Time, and Clear Cache when necessary. These features help to improve the performance of your website and ensure that your Sitemap is always up-to-date for Search Engines to crawl.
Here is a short list of Google XML Sitemap plugin features.
Features:
<ul>
<li>Multiple Sitemaps by Sitemap Index 🔥</li>
<li>Custom XML Sitemap URL 🔥</li>
<li>IndexNow Protocol for indexing Microsoft Bing, Seznam.cz, Naver, and Yandex</li>
<li>Control Sitemap Options for all Pages, Posts, Custom Posts, Archives, Authors, Categories, Taxonomies and Tags 🔥</li>
<li>Include/Exclude Taxonomies, Categories, Tags 🔥</li>
<li>Add Custom Sitemaps to Sitemap Index</li>
<li>Add Custom External/Internal URLs to your XML Sitemap 🔥</li>
<li>Automatically add Sitemaps to robots.txt</li>
<li>Links Per Page for Sitemap Index 🔥</li>
<li>Static Sitemap File detector</li>
<li>Toolbar with most helpful Actions & Links</li>
<li>Disables auto-generated WP Sitemaps</li>
<li>Setup Wizard 🔥</li>
<li>WP-CLI commands for Sitemap generation [NEW] 🔥</li>
<li>Multisite Network compatible</li>
<li>WooCommerce compatible</li>
<li>Multilingual Sitemap 🔥</li>
<li>WPML compatible</li>
<li>Polylang compatible</li>
<li>TranslatePress compatible</li>
<li>FooGallery compatible</li>
<li>Yoast SEO compatible with noindex</li>
<li>Rank Math SEO compatible with noindex</li>
<li>SEO Framework compatible</li>
<li>User-Friendly Interface</li>
<li>No Coding required</li>
</ul>
Google News Features:
<ul>
<li>Sitemap Tags: Publication Name, Language, Title and Publication Date</li>
<li>Custom Google News URL 🔥</li>
<li>Custom News Publication Name</li>
<li>WPML compatible</li>
<li>Polylang compatible</li>
<li>TranslatePress compatible</li>
</ul>
Image Sitemap Features
<ul>
<li>Hide Image Previews [NEW]</li>
<li>Multiple Sitemaps by Sitemap Index</li>
<li>Include Pages & Posts</li>
<li>Custom Image Sitemaps URLs</li>
</ul>
Video Sitemap Features
<ul>
<li>Multiple Sitemaps by Sitemap Index</li>
<li>Include Pages & Posts</li>
<li>Custom Video Sitemaps URLs</li>
</ul>
Advanced Features
<ul>
<li>Cache Sitemaps 🔥</li>
<li>Cache Expiration Time</li>
<li>Last Cached Time of Sitemaps</li>
<li>Import & Export Settings</li>
</ul>
<h3>🌟 Upgrade to Pro Version</h3>
Upgrade to the <a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=content&utm_campaign=xml_sitemap" rel="nofollow ugc">Google XML Sitemaps Generator Pro</a> to get access to even more features, like an HTML Sitemap, Exclusion of specific Pages and Custom Posts from your Sitemap, Google News Premium Features, and more.
<a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=get-pro-version&utm_campaign=xml_sitemap" rel="nofollow ugc">Get Pro Version now</a> and take your Search Engine Optimization to the Next Level.
Custom Priority and Frequency for a Single Page/Post
Customize the Priority, Frequency, and Exclude from Sitemap options for a Single Post, Page, or CPT <a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=post-meta&utm_campaign=xml_sitemap" rel="nofollow ugc">with the Pro Version</a>.
HTML Sitemap
Improve your website’s navigation with HTML Sitemap feature. This feature allows you to create an HTML Sitemap that can be displayed on your website’s pages using popular Page Builder Widgets such as Elementor, Gutenberg, WPBakery, or simple Shortcode.
You can also customize your HTML Sitemap by choosing which Post Types to display, including Pages, Posts, and Custom Post Types, through the convenient multiselect option. With this feature, you can easily enhance your website’s user experience and make it more SEO-friendly. <a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=html-sitemap&utm_campaign=xml_sitemap" rel="nofollow ugc">Try Pro Version</a> today!
Premium Features
<ul>
<li>Exclude Pages, Posts, Custom Posts from Sitemap</li>
<li>Exclude Categories and Tags from Sitemap 🔥</li>
<li>Include only selected Categories & Tags [NEW]</li>
<li>HTML Sitemap 🔥</li>
<li>Single Post/Page Custom Sitemap Options: 🔥 
— Exclude from Sitemap 
— Post Priority 
— Post Frequency</li>
<li>Posts Priority Automatic Calculation: 
— by Number of Comments 
— by Average Comments Count</li>
<li>Page Builder Widgets and Shortcode for HTML Sitemap: 
— Elementor widget 
— Gutenberg block 
— WPBakery (Visual Composer) widget 
— [html-sitemap post-types=”page,post,..” ..]</li>
<li>Sitemap Custom Colors [NEW] 🔥</li>
<li>No Branding Marks 🔥</li>
<li>Premium Support</li>
</ul>
Google News Premium Features
<ul>
<li>Include Custom Post Types</li>
<li>Include Taxonomies</li>
<li>Keywords 🔥</li>
<li>Stock Tickers 🔥</li>
<li>Exclude Posts and Custom Posts</li>
<li>Exclude Categories and Tags 🔥</li>
<li>Include only selected Categories & Tags [NEW]</li>
</ul>
Image Sitemap Premium Features
<ul>
<li>Image Sitemap MIME Types</li>
<li>Exclude Broken (404) Images 🔥</li>
<li>Include Featured Images</li>
<li>Include WooCommerce Gallery 🔥</li>
<li>Include Custom Post Types</li>
</ul>
Video Sitemap Premium Features
<ul>
<li>YouTube videos 🔥</li>
<li>Vimeo videos [NEW] 🔥</li>
<li>X (Twitter) videos [NEW] 🔥</li>
<li>Include Custom Post Types</li>
</ul>
Advanced Premium Features
<ul>
<li>Smart Caching 🔥</li>
<li>Minimize Sitemap source code</li>
<li>Cron Job [NEW] 🔥</li>
</ul>
⭐ <a href="https://wpgrim.com/google-xml-sitemaps-generator-pro/?utm_source=wordpressorg&utm_medium=get_pro&utm_campaign=xml_sitemap" rel="nofollow ugc">Get PRO Version Now</a>
<h3>More Powerful Plugins</h3>
<a href="https://wordpress.org/plugins/classic-editor-and-classic-widgets/" rel="ugc">Classic Editor and Classic Widgets</a>
Developed with ❤️ by <a href="https://wpgrim.com/?utm_source=wordpressorg&utm_medium=direct&utm_campaign=xml_sitemap" rel="nofollow ugc">WP Grim</a>

Dynamic XML Sitemaps Generator for Google

Boost SEO 🚀 with powerful XML, HTML, Image, Video & Google News sitemaps for better search engine indexing.

IsSiY (Include second Sitemap into Yoast) WordPress SEO Extension vs Dynamic XML Sitemaps Generator for Google