Openboard was good and got abandoned a year-ish ago, but there’s a fork of it now that I’d highly recommend checking out, they have glide typing but you have to manually install it but it’s a really easy install, only a few b. I switched from gboard and I’ve been using it for about a month or two happily.

beehaw.org/comment/1196291 (app in the OP I made but link is to a comment giving instructions for the glide typing)