rockstarlab

<h4>Classic Editor Media Link</h4>
Enhance your WordPress Classic Editor experience with the Classic Editor Media Link plugin. This lightweight plugin seamlessly adds a convenient “Media Library” button directly into the default TinyMCE (Classic Editor) “Insert/edit link” dialog.
Instead of manually finding and pasting file URLs, you can now easily browse and select media files (such as PDFs, documents, images, or zip files) straight from your WordPress Media Library to create links instantly.
Key Features: 
* Time-Saving: Select files directly from the Media Library inside the Insert Link popup without leaving the editor. 
* Perfect Compatibility: Works flawlessly with the classic TinyMCE editor anywhere in WordPress, including the standard Classic Editor plugin, WooCommerce, and custom fields like Advanced Custom Fields (ACF) WYSIWYG editors. 
* No Bloat: A focused, lightweight tool that does exactly what you need.
Note: This plugin is designed specifically for the Classic Editor and classic TinyMCE instances. It is not intended for the Gutenberg Block Editor.

Classic Editor Media Link

Plugin adds Media Library Button to the default TinyMCE (Classic Editor) Insert Link dialog

David Klhufek

This simple plugin adds useful buttons to the native WordPress HTML editor (Classic Editor).
Currently adds: 
h1, h2, h3, h4, h5, span, hr, nbsp, mox
The “mox” button adds a nice responsive CSS class which you can use to highlight pictures or other elements in your posts.
Note: This plugin works only with the Classic Editor. It does not support the new Gutenberg (Block Editor).
<h3>Compatibility</h3>
<ul>
<li>Requires the Classic Editor to be active. </li>
<li>Designed specifically for the HTML mode of the editor.</li>
</ul>

Quicktags for WP

This simple plugin adds useful buttons to the native WordPress HTML editor.

Classic Editor Media Link vs Quicktags for WP