Dutch van Andel

This simple plugin is a must-have for anyone that works with custom taxonomies or post types – and is an especially good compliment 
to Brad Williams’ indispensable <a href="https://wordpress.org/extend/plugins/custom-post-type-ui/" title="Custom Post Type UI" rel="ugc">Custom Post Type UI</a> plugin.
By default, WordPress only shows built-in taxonomies in your administrative list tables (e.g. Categories & Tags). But 
if you rely on custom taxonomies for organization (particularly when working with custom post types) then you are 
typically out of luck.
This plugin fixes that – ensuring that custom taxonomies are added as columns to all necessary list tables automatically.
This is an initial release and includes no bells or whistles – but if you need this functionality, you’re likely a developer 
just looking for a good head start, anyway. If you have any improvements, additions, or suggestions, please leave a post in the 
WordPress.org forums with the correct <code>custom-taxonomy-columns</code> tag.

Custom Taxonomy Columns

Automatically adds custom taxonomy columns to admin list tables.

Austin

Chris Jean

MartyThornley

DH-Shredder

As of version 0.2.2 you can select which post types you’d like to have the image column. 
It simply adds a column before the title (far left) the show’s the posts featured image if it’s supported and exists.
Want to change the default image? Simply filter you own image by using <code>featured_image_column_default_image</code> 
or filter your own CSS by using the <code>featured_image_column_css</code> filter hook.
<h4>Example actions/filters</h4>
Add support for a custom default image
<pre><code>function my_custom_featured_image_column_image( $image ) {
 if ( !has_post_thumbnail() ) {
 return trailingslashit( get_stylesheet_directory_uri() ) . 'images/featured-image.png';
 }

 return $image;
}
add_filter( 'featured_image_column_default_image', 'my_custom_featured_image_column_image' );
</code></pre>
Remove support for post types Use the <code>featured_image_column_init</code> action hook for your filter.
<pre><code>function frosty_featured_image_column_init_func() {
 add_filter( 'featured_image_column_post_types', 'frosty_featured_image_column_remove_post_types', 11 ); // Remove
}
add_action( 'featured_image_column_init', 'frosty_featured_image_column_init_func' );

function frosty_featured_image_column_remove_post_types( $post_types ) {
 foreach( $post_types as $key => $post_type ) {
 if ( 'post-type' === $post_type ) // Post type you'd like removed. Ex: 'post' or 'page'
 unset( $post_types[$key] );
 }
 return $post_types;
}
</code></pre>
For more question please visit <a href="https://austin.passy.co/wordpress-plugins/featured-image-column/" rel="nofollow ugc">https://austin.passy.co</a>

Featured Image Column

Adds a column to any post type edit screen with the featured image if it exists.

Custom Taxonomy Columns vs Featured Image Column