I always liked their voice dictation because it's better than Samsungs or Googles while it's on device. It's super fast and puts in punctuation in, etc.
The keyboard on the other hand I never really liked for some reason which I can't even explain clearly. So for the keyboard I've been using https://github.com/HeliBorg/HeliBoard for ever, but it does not have sviping.
I might try FUTO Swipe just to test it.
Heliboard does have swiping! You just have to manually download the GBoard swiping library and upload it in the app.
Not only does heliboard have swiping, it has two finger swipe, which is more than 2x better than one finger swipe!