I know GC controller aren't supposed to be supported for this game, but could that be a thing in the next update? I think I got most inputs mapped correctly except for Sprint. Nothing works for Sprint.
Try using Verizon instead
BU DU TIST
I think I've got my gamecube controller firing properly, I can send you a screenshot of my bindings I think? (I'm using the official adapter and the driver built for it)