I have been contributing to WordPress since 2013. More intensely during the year I was sponsored by Automattic in 2020-2021.
As my main focus in design and UI/UX I have over a bunch of years made some very interesting Figma mockups.
The Publish screen.
Manage Reusable blocks.
Inline Inserter with drop down
Inserter panel: Click the expand icon to view patterns in an overlay.
Navigation prototype explorations
Switching between Full Site Editing <-> Single Page.
Creating a Reusable block og pattern.
I have 320 closed issues on the Gutenberg Github repository which shows a huge spector of issues I have contributed to.