I think you might be able to use an xbox controller with a daisy chain of adapters

http://atariage.com/forums/topic/167232-xbox-controller-on-gamecube-and-wii/

https://gbatemp.net/threads/original-xbox-controller-for-gamecube-games.363166/

https://www.amazon.com/Playstation-Xbox360-Controller-Adapter-Xbox-360/dp/B0055TH6E4

Edits:Adding Links