So far for my best efforts at searching I’ve gone with open board. I like it a lot but it doesn’t fit my requirements in that there appears to be no swipe to type functionality and emojis are, like in many keyboards, sorted in to unhelpful categories with no ability to search. I also don’t like that there’s no kind of numbers page where the keyboard consists exclusively of numerals which are on larger than normal keys.

For the sake of it at least not being gboard it’s worth putting up with this I think, but it’s a shame nothing could just completely replace it with no compromise. Very pleased that it looks nearly identical except a a bit cleaner and has this great feature where you can use the space key like a track pad to scroll left or right through text.