I’m slowly but surely switching everything I use to FOSS alternatives and after using Gboard for a while thanks to it’s good swipe typing, I moved to OpenBoard for the same reason. Unfortunately, the fact that I can’t auto-fill my password via 1Password is bugging me (on top of less-than-ideal autocorrect). You guys know any alternatives?
FlorisBoard is FOSS and behaves just like Gboard in regards to password auto-fill
I am using OpenBoard with bitwarden, and while it doesn’t offer the autofill in the autocomplete section it does work as a dropdown in the input field
Keepass2Android provides both an autofill function and an alternative keyboard. As the name implies, it works with a Keepass file.
You can also try AnySoftKeyboard as well, it works fine with Bitwarden. Also, it has many customization options.
Try FlorisBoard
I’m using GBoard on grapheneos with all permissions removed basically. Not quite what you asked for
I currently use this fork of OpenBoard since its actually getting updates and a ton of fixes. supports glide/swipe typing. Then Bitwarden like someone else mentioned. Pops up in a drop down when you click a username field.