Tracy Rotton

taupecatstudios

Custom taxonomies that were developed prior to the release of WordPress 5.0 (the Gutenberg release) may not be compatible with the WordPress block editor.
Custom taxonomies require that the “show_in_rest” property be set to “true” in order to work with the block editor. “show_in_rest” was added with WordPress 4.7 and the integration of the WordPress JSON REST API. Sites using custom taxonomies that were created prior to this likely do not have this property set. Additionally, the default value for “show_in_rest” is “false” (this is poorly documented), ergo older custom taxonomies will not appear in the WordPress block editor interface.
This plugin will take any custom taxonomy where the “show_in_rest” feature is set to “false” and change it to “true”. It will not add any additional REST properties, such as “rest_base” or “rest_controller_class”. If you need those properties set for any reason, you will need to update your custom taxonomy where it is being registered.

Custom Taxonomies for Blocks

WordPress plugin to convert older custom taxonomies so they can be used in the WordPress blocks interface (a.k.a. Gutenberg).

Mats Westholm

Add one or more Custom Taxonomy to your wordpress managed website.
This plugin is focused on an easy to use interface with small number of choices to make it easier to use for a non technical user.
MW Taxonomy let you choose
<ol>
<li>Taxonomy name in plural and singular,</li>
<li>slug</li>
<li>select the post types (default and custom) where your custom taxonomy can be used</li>
<li>select wheather it should be hierarchical or not</li>
<li>select wherher the taxonomy should be indexed by search engins or not</li>
</ol>
MW Taxonomy includes a widget Custom Taxonomy List for presenting taxonomies in the blog. You need to use a theme that supports widgets for this, that is a classic (non-block) theme. Use the plugin <a href="https://wordpress.org/plugins/classic-widgets/" rel="ugc">Classic Widgets</a> if you don’t find the widget.
Taxonomies can also be presented by Tag Cloud widget or menus (classic theme).
Works in multisite environment as well.
<h4>Docs & Support</h4>
Please ask support questions in the plugin [support forum].(https://wordpress.org/support/plugin/mw-taxonomy)

MW Taxonomy

Easy to use wordpress plugin to add a custom taxonomy

Custom Taxonomies for Blocks vs MW Taxonomy