Tag Posts Widget is a light widget to show posts from a given set of tag.
Ispired by Category Posts Widget by James Lao – http://jameslao.com
Features:
<ul>
<li>Select any number of tag to be shown.</li>
<li>Add the tag browsed, while browsing the tag archives.</li>
<li>Set how many posts to show.</li>
<li>Option to append the tag names to the title.</li>
<li>Multiple widgets.</li>
</ul>

Tag Posts Widget

Adds a widget that shows the post from a given set of tags.

iziwebavenir

Exclude categories, tags, posts or pages from your homepage (without breaking pagination)

Name: WP Exclude From Homepage

works on 4.9

Great plugin. 
Stills works like a charme in WordPress 5.9.2

Works in WP 5.9.2

Exclude categories, tags, posts or pages from your homepage (without breaking pagination)

Tag Posts Widget vs Name: WP Exclude From Homepage