radgh

This simple and lightweight plugin adds a “Hide from search engines” checkbox above the publish box to pages. By 
ticking this box, a meta tag will be placed into the <code><head></code> section of your page specifying that robots should 
not index the page.
By default this only applies to pages. You may extend this functionality to posts or other custom post types with a small bit of code. See the FAQ’s tab for further instructions.

Noindex Pages

Ask search engines not to index individual pages by checking an option in the publish post box.

JS Morisset

Extends the WordPress Sitemaps XML:
Improve the WordPress sitemaps XML with article modification times, alternate language URLs, news sitemaps, images sitemaps, video sitemaps (requires WPSSO Core Premium for video details) and more.

Include Alternate Languages:
Include <a href="https://developers.google.com/search/docs/advanced/crawling/localized-versions#sitemap" rel="nofollow ugc">localized pages for Google</a> (ie. alternate language URLs) from PolyLang and WMPL.
Include Images and Videos:
Optionally include images and videos in the WordPress sitemaps XML. Note that video information requires the WPSSO Core Premium plugin for video details.
Include Post Type Archives:
Include missing post type archive pages in WordPress sitemaps (like the WooCommerce shop page and The Events Calendar events page).
Select Post Types and Taxonomies:
Optionally include or exclude post types and taxonomies from the WordPress sitemaps XML.
Exclude Noindex and Redirected URLs:
Exclude noindex and redirected posts, pages, custom post types, taxonomies (categories, tags, etc.), and user profiles pages from the WordPress sitemaps XML.
<h3>WPSSO Core Required</h3>
WPSSO WP Sitemaps XML is an add-on for the <a href="https://wordpress.org/plugins/wpsso/" rel="ugc">WPSSO Core plugin</a>, which creates extensive and complete structured data to present your content at its best for social sites and search results – no matter how URLs are shared, reshared, messaged, posted, embedded, or crawled.

WPSSO WP Sitemaps XML with News, Image, and Video Sitemap

Extend the WordPress sitemaps XML with article modification times, alternate languages, news sitemaps, image sitemaps, and video sitemaps.

Noindex Pages vs WPSSO WP Sitemaps XML with News, Image, and Video Sitemap