JS Morisset

<p>If no featured image has been selected for a post, page, or custom post type, this plugin will assign the first featured image found from its parent, grand-parent, great-grand-parent, etc.</p>
<p>The plugin makes no permanent changes – simply deactivate the plugin to disable the automatically inherited images. 😉</p>
<h3>Coded for Performance</h3>
<p>This plugin uses the WordPress <code>wp_cache_get()</code> and <code>update_meta_cache()</code> functions for maximum performance and fully integrate with WordPress core functionality.</p>


JSM Inherit Parent Featured Image

Inherit the featured image from the Post, Page, or Custom Post Type parent, grand-parent, great-grand-parent, etc.

KamataRyo

<p><a href="https://github.com/KamataRyo/inherit-theme-mods" rel="nofollow ugc">This plugin is hosted on github.</a></p>
<p><em>Inherit Theme Mods</em> enables to copy customizer properties from parent theme to child.</p>
<p>Do you still need customizer properties of parent theme when you decorating new websites with child theme?<br />
‘Inherit Theme Mods’ can solve it.<br />
This plugin simply copies and inherit, or overwrite parental properties to its child.<br />
Also it works as an inspector of customizer properties.</p>
<h3>Required</h3>
<ul>
<li>tested on PHP5.3 and PHP5.6</li>
<li>tested on WordPress3.9.12 and WordPress4.5.2</li>
</ul>


Inherit Theme Mods

'Inherit Theme Mods' enables to copy customizer properties from parent theme to child.

JSM Inherit Parent Featured Image vs Inherit Theme Mods