"Minor Edit" Option That Keeps the Last Updated Date
Adds a "Minor edit" checkbox to the block editor; when ticked, fixing a typo does not change the post's last modified date, so "Updated on" labels and sitemaps only change for real updates.
Snippet Library
Content snippets for WordPress
Snippets that add to or change your posts and pages: reading time, author boxes, “last updated” notes, content after the post or after a paragraph, and excerpt tweaks. For bloggers, publishers and anyone who wants richer posts without editing theme files.