I use OpenBoard most of the time and it's good if you are more privacy focused.
F-Droid
F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
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Is it possible with this keyboard to swipe instead of type?
If you install a fork of it with that feature, yes. I personally use this fork: https://github.com/erkserkserks/openboard
No, it's not possible by now
I use AnySoft Keyboard. It is very configurable and has a lot of language options.
Haven't seen unexpected keyboard mentioned. Been using that for a few months now. Lots of keys, not many other features. With a compose key, it would almost be perfect. Hackers is my backup keyboard.
Vanilla GrapheneOS keyboard as per their guide.
Keychron running my own build of QMK. Its fully VIA compatible so I can do quick macro changes.
I use FlorisBoard
Totally agree. You can customize it a load. It has a ton of functions even local spellchecking once setup
Second this. Tried a lot of keyboards when moving over to foss, and this one felt hands down the best for me.