I use Gboard and have been meaning to find an alternative, so this is a useful thread though it seems the concensus is there aren’t really any.
What I’d love to do is completely remove any reference to stickers and gifs from the emojis selection but it’s not possible. The emojis button can be removed from the keyboard, maybe it’s time to go back to traditional ASCII.
Openboard with swipe has fixed this for me. Takes a little getting used to but worth it IMO.