Which wp plugin can be taken as a sample of great code to study?

Question

WordPress

I thought about writing a plugin. I decided that this time I should pay attention to everything: the file structure, OOP, and code style. Recommend a non- bulky wp plugin for such a study + so that it works with the wp database and has recently been updated.
Thank you.

Answer 1

https://github.com/mattyza/starter-plugin