Raphnet makes an adapter cable that converts a classic controller (Wii classic, Wii classic pro, NES classic, SNES classic) into a GameCube port. If you can't stomach paying $200 for the Hori
Gbros
GTron Adapter | RetroRGB
Wii adapter Classic controller to Gamecube 140cm Calble Updateable firmware Game | eBay
4-Port Controller Adapter for GameCube® Compatible with Nintendo Switch® / Wii U® / PC/ Mac®
Wireless Adapter for Nintendo Switch, Compatible with Nintendo Switch – ECHZOVE
Gamecube Controller Adapter for Nintendo Switch | Hand Held Legend
raphnet. - Classic controller to Gamecube/Wii adapter
raphnet. - Gamecube controller to Wiimote adapter
PowerA GameCube Style Wired Controller for Nintendo Switch | Nintendo Switch Wired controllers. Officially licensed. | PowerA
Gbros
gamecube Controller Adapter (For Switch/WiiU/PC) – YCCTEAM
Wii Classic Controller on modded Wii is underrated : r/WiiHacks
Amazon.com: Super Smash Bros. GameCube Adapter for Wii U : Video Games
GameCube® Controller Adapter - XYAB
raphnet. - Classic controller to Gamecube/Wii adapter
wingman series - Brook Gaming
BlueRetro Motor Wireless Game Controllers Adapter For Nintendo GameCube Retro Game Console to PS4 PS5 Wii
GameCube Controller Adapter for Wii U, PC USB, MAC & SWITCH - NEXiLUX - Walmart.com
raphnet. - Classic controller to Gamecube/Wii adapter
TTX Tech GameCube Controller Adapter for Wii U and Switch - Micro Center
C-stick, activate: Wii U to receive GameCube controller adapter | Ars Technica
List of Wii games with traditional control schemes - Wikipedia
Nintendo Controller for GameCube (Styles May Vary) | GameStop
Gamecube Controller Adapter for Nintendo Switch | Hand Held Legend
