ska-dev

Adds a compact group of additional buttons to the Block Editor toolbar that allow to perform common actions without using hotkeys or opening dropdown menus.
Available actions:
<ul>
<li>Insert before</li>
<li>Insert after</li>
<li>Group</li>
<li>Ungroup</li>
<li>Copy</li>
<li>Cut</li>
<li>Duplicate</li>
<li>Delete</li>
<li>Strip metadata</li>
</ul>

ska-toolbar

Adds a toolbar with quick actions to the Block Editor.

hashsalacop

A simple plugin that allows you to copy or cut paragraphs from your site’s main content to the clipboard to use elsewhere. or you can customize depends on your needs
Plugin Features: 
1. Copy Content and paste 
2. Copy and Cut content and paste 
3. Its easy to use. 
4. Tested up to latest WordPress

CLIPBOARD

A simple plugin that allows you to copy or cut paragraphs from your site’s main content to the clipboard to use elsewhere.

ska-toolbar vs CLIPBOARD