I’ve looked at a few on fdroid and they all seem like they aren’t being maintained anymore.
Edit: I’ve spent the past day trying most all of the suggested keyboards here and I think I’ve landed on either Unexpected Keyboard or AnySoftKeyboard. Thanks for all the suggestions. Thumbkey is quite the thing to get used to.
I’m using it now instead of gboard behind a firewall
https://github.com/Helium314/openboard
Also supports gestures for text selection (slide left/right on space bar) and text deletion (per character instead of per-word on gboard)
Swipe left on delete button to delete entire sentences…
Edit. Arrow swipe from shift to letter to write big letter without switching case