Coen Jacobs

Adds a custom post type that can be easily inserted at multiple spots, including widgets. Easy way to create WYSIWYG widgets.
This plugin is still alive. It has been tested to run on the most recent WordPress version and it still works fine. Future versions will bring more features and an updated code base.
Please use the <a href="https://wordpress.org/support/plugin/smart-wysiwyg-blocks-of-content" rel="ugc">support forums</a> to request support in case you have some kind of trouble. You can contribute to the plugin via the <a href="https://github.com/coenjacobs/smart-wysiwyg-blocks-of-content" rel="nofollow ugc">GitHub repository</a>. Pull requests or bug reports are very welcome there.

Smart WYSIWYG Blocks Of Content

Adds a custom post type that can be easily inserted at multiple spots, including widgets. Easy way to create WYSIWYG widgets.

Andrew Ozz

This plugin is intended for more advanced users that would like to change the default TinyMCE configuration in WordPress. 
It makes it very easy to add, remove or change all TinyMCE settings for the classic editor and for the classic block in the block editor.

Advanced TinyMCE Configuration

Set advanced TinyMCE options for the classic block and classic editor.

Smart WYSIWYG Blocks Of Content vs Advanced TinyMCE Configuration