Recommendations for Free homebrew GBA, GBC, and GB games?

I'm thinking of selling some of my old devices and wanted to load some games that are *legally free and free to distribute*. Need help coming up with a list. this is what I have so far:

- Apotris

- Powder Roguelike

- Rogue

- various free itch.io GBStudio games.

Any other interesting titles out there?