The fulcrum comes to mind: It has a 5-way joystick (up, down, left, right and push) for the thumbs. You can always add tenting if you want (some alternatives)
You also can check some of the split kb databases if someone created something similar.
The fulcrum comes to mind: It has a 5-way joystick (up, down, left, right and push) for the thumbs. You can always add tenting if you want (some alternatives)
You also can check some of the split kb databases if someone created something similar.