Amit Sonkhiya

K.K.Agarwal

Gutenberg Editor already maintains the parent-child relationship when you select a category. So the child doesn’t move at the top in the category meta box. So this plugin isn’t required if you’re using the Gutenberg Editor.
Categories in Hierarchical Order plugin applies to WordPress Classic Post Editor only.
This plugin contains functionality to let you maintain default hierarchical order of categories when you select and save them for a post in your WordPress Admin Classic Post Editor.
The selected category/categories, to which a post belongs, are by default pushed at the top in the Category tab while saving the post. Whereas activating Categories in Hierarchical Order plugin will keep the position of selected category/categories unchanged as per their parent/child relationship.
For support, use support page available here or visit <a href="https://www.astech.solutions/wordpress-javascript-jquery-plugins/categories-hierarchical-order/" rel="nofollow ugc">the page</a> at our official website. A <a href="https://github.com/as-tx/categories-hierarchical-order" rel="nofollow ugc">GitHub repo</a> is also there to post issues, contribution and feature requests.

Categories in Hierarchical Order

Does exactly what you expect from this plugin. Nice!

Works great!

Does exactly what should be the default option in Wordpress, great! Sorely needed if you have many categories (possibly with very similar names) and rely on a complex hierarchy.

Great!

Perfect

Why is this not part of the WordPress core yet? This plugin fixed my ugly looking category structure! Thanks guys!

Brilliant!

Categories in Hierarchical Order plugin maintains the hierarchical order of categories list in the Category tab under your WordPress Admin Post Editor …

Amin Nazemi

This plugin disables Pagination in navigation menu lists and preserves taxonomy hierarchy. 
Also, it helps you when you using WooCommerce and you have more than 50 category items. 
It can preserve WooCommerce category hierarchy.
FEATURES
<ul>
<li>Disable Pagination in nav menu add item lists </li>
<li>Preserve hierarchy in category nav menu add item list and posts category selector</li>
<li>Automatically scroll to first checked item in post category selector </li>
<li>Preserve WooCommerce category hierarchy</li>
</ul>

Preserve Taxonomy Hierarchy

Preserve hierarchy in posts category and navigation menu editor lists.

Categories in Hierarchical Order vs Preserve Taxonomy Hierarchy