I assume you’ve played or heard of Yooka-Laylee. There’s also Clive n Wrench. Neither of those are great though.
I haven’t heard of Koa before, but it looks interesting. I’ll have to check it out.
But I really want a new Banjo game, however I doubt that ever happens at this point. I recently started working on my own Banjo clone in the Godot game engine because I don’t see anyone making the kind of game I’m looking for.