asokaaso2

This plugin lets you filter the posts and any CPT from the dashboard. Additionally, if the post type supports author metabox, this plugin will also transform the select field. Note that this plugin uses select2 library so it might cause conflicts with other plugins. Compatible with ACF.

Kikx Simple Post Author Filter

A way to filter posts by authors from the dashboard and set the author of individual posts.

ritesh143

ACS Advanced Search will add a advanced search link below the search field and support for advanced custom search and filter. You can expand your search to search within different taxonomies or categories or within custom post types, author, post date, post date range,post per page also add custom css in option field for advanced search form. This plugin is light, fast and coded with best practice.
Features:
<ul>
<li>You can choose whether you want this plugin to add advanced search link at your search field or not.</li>
<li>You can select number of posts show on per page.</li>
<li>You can pick which post types you want your users to be able to select when performing a search otherwise search perform in all post types.</li>
<li>You can pick which taxonomies you want your users to be able to select when performing a search.</li>
<li>You can disable search input if you want.</li>
<li>You can choose whether you want your users to be able to performing a search by post date or post date range.</li>
<li>You can choose whether you want your users to be able to performing a search by author or not. </li>
<li>You can add your custom styling for advanced search form in option field.</li>
<li>Included Shortcode</li>
</ul>

ACS ADVANCED SEARCH

Very helpful plugin, easy to use and manageable.

Great Job

Search and Filtering for Posts and Pages,author, Categories, Taxonomies, Post Dates, Post Dates Range  and Post Types.

Kikx Simple Post Author Filter vs ACS ADVANCED SEARCH