Simon Wheatley

A plugin providing template tags to list all active (or inactive) authors in the WordPress installation.
<pre><code><?php list_active_authors( 'days=30&include_protected_posts=0' ); ?> Will list all the authors active in the last 30 days, not counting password protected posts as "activity". Both parameters are optional.

<?php list_inactive_authors( 'days=30&include_protected_posts=0' ); ?> Will list all the authors NOT active in the last 30 days, counting password protected posts as "activity". Again, both parameters are optional.
</code></pre>
If “days” are not provided the tags default to the last 30 days. 
If “include_protected_posts” is not specified, the tags default to not including password protected posts.
The HTML output is fairly heavily classed, but if you need to adapt it you can. Create a directory in your theme called “view”, and a directory within that one called “author-listings”. Then copy the template files <code>view/author-listings/active-authors-list.php</code> and/or <code>view/author-listings/inactive-authors-list.php</code> from the plugin directory into your theme directory and amend as you need. If these files exist in these directories in your theme they will override the ones in the plugin directory. This is good because it means that when you update the plugin you can simply overwrite the old plugin directory as you haven’t changed any files in it. All hail <a href="http://urbangiraffe.com/" rel="nofollow ugc">John Godley</a> for the code which allows this magic to happen. Can hook into the <a href="https://wordpress.org/extend/plugins/user-photo/" rel="ugc">User Photo plugin</a> to display the author photos.
Plugin initially produced on behalf of <a href="http://www.puffbox.com" rel="nofollow ugc">Puffbox</a>.
Is this plugin lacking a feature you want? I’m happy to accept offers of feature sponsorship: <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a> and we can discuss your ideas.
Any issues: <a href="http://www.simonwheatley.co.uk/contact-me/" rel="nofollow ugc">contact me</a>.

Author Listing

Allows listing of authors who are active or inactive within a defined recent period of time.

Shadi G شادي جـ

This plugin allows you to seamlessly add guest authors or contributors to your WordPress posts, specifically within block themes (Full Site Editing). Guest authors/contributors created with this plugin function identically to regular user authors, complete with dedicated archive pages showcasing all their content.
<h4>Key Features</h4>
✅ Effortless Guest Contributor Integration: Add guest authors/contributors to your posts without creating user accounts. They’ll function just like regular authors. 
✅ Dedicated Author Archives: Each guest author will have their own archive page displaying all their published posts. 
✅ Multiple Post Guest Author or Contributor Support: Have a variety of guest authors/contributors? No problem! This plugin allows for the addition of multiple guest authors/contributors. 
✅ Multiple Roles Support: Have a variety of post contributtor (author, fact-checker, etc)? No problem! This plugin allows for the assingment of multiple roles for contributors. 
✅ Ability to support any post type: You can chose which post type to add this feature to. 
✅ One click migratiion from PublisherPress Authors: You can migrate on one click from PublisherPress Authors. Migration from other plugins will be included in new releases soon.
<h4>Othor</h4>
You can use the <code>mshmn_all_post_author_names</code> custom field (post meta) to retrieve all primary authors or contributors assigned under the default role. 
A common use case is when you want to define a custom schema.org configuration for a post type, and want to set the post author attribute.

Musahimoun – Multiple Authors, Guest Authors & Contributors for WordPress Block Themes

This plugin allows you to choose an author, create a guest author or choose multiple authors and contributors..

Author Listing vs Musahimoun – Multiple Authors, Guest Authors & Contributors for WordPress Block Themes