THATplugin

Quickly and easily iconize posts, pages, menu items, widget titles, taxonomies, and pretty much everything, using icon picker with plenty of customization options. No shortcodes. No coding skills required. Developer friendly.
Iconize is here to make your life easier, by providing simple and easy to use interface for inserting icons.
Features:
<ul>
<li>8 Optional Icon Fonts included – Dashicons, Font Awesome 4.7, Font Awesome 5 Free (Solid, Regular, Brands), Bootstrap Icons, Foundation 3 Icons and Iconoir</li>
<li>Upload custom fonts</li>
<li>The only actual WYSIWYG icons classic editor plugin (works inside Gutenberg classic editor block)</li>
<li>Menu icons (Customizer support)</li>
<li>Widget title icons (Customizer support)</li>
<li>Post Categories, Post Tags, Custom Taxonomy icons</li>
<li>Effects, color, size, alignment, custom CSS classes options</li>
<li>26 CSS transform options</li>
<li>13 CSS animation options</li>
<li>56 CSS hover effects</li>
<li>Optionally use included fonts inside popular free page builders (Elementor, Beaver Builder, Page Builder by SiteOrigin)</li>
<li>CMB2 Custom field</li>
</ul>
Getting started:
Here’s a link to our <a href="https://thatplugin.com/docs/iconize/" title="Iconize Documentation" rel="nofollow ugc">Documentation</a>, we doubt that you’ll need anything else but feel free to ask if you have any question.

Iconize

Quickly and easily insert icons to posts, pages, menu items, widget titles, taxonomies using icon picker with plenty of customization options

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.

Iconize vs Preserve Taxonomy Hierarchy