“Restrict Registration” is a plugin for WordPress that allows you to control 
who is registering on your blog. This plugin uses simple blacklists and 
whitelists to define who can register for your blog, and who is restricted. Use 
simple literal matching, flexible asterisk wildcard matching, or powerful 
regular expression matching: it’s your choice! The options page is clear and 
easy to use. Set your lists, and you’re done!
This plugin was inspired by WP-Deadbolt, but has been completely rewritten and 
redesigned, and several new features have been added.

Restrict Registration

Use simple blacklists and whitelists to control who can and cannot register on your blog.

JuuRokuDezain

Enable or disable each Gutenberg block individually. By hiding unused options and keeping only what you truly need, you can give your editors a clean, focused, and easy-to-use experience.
Features:
<ul>
<li>Toggle ON/OFF for each block with checkboxes </li>
<li>List all registered blocks by category</li>
<li>“All ON” and “All OFF” buttons for each category</li>
<li>“Administrators are exempt from restrictions” option (for cases where administrator privileges are granted to the client)</li>
<li>Apply uniformly to the entire site</li>
<li>Japanese language support (translation file included)</li>
</ul>
<h4>Notes</h4>
<ul>
<li>This plugin is used only in the administration screen.</li>
<li>Only administrator users privileges can configure settings.</li>
</ul>

16Deza Block Curator

Control which Gutenberg blocks editors can use — keep only what they need.

Restrict Registration vs 16Deza Block Curator