raphnet. - Classic controller to Gamecube/Wii adapter
Wired controller 8BitDo Ultimate C
8bitDo GBros Wireless Adapter for NES SNES SF-C Classic Edition Wii Classic for Switch Gamecube
Gbros
Tested these 3 controllers for the gameboy player. I think the best is the 8bitdo SN30 pro+ : r/Gamecube
WiiU Pro on Switch using 8Bitdo Wireless adapter - YouTube
8Bitdo NES30/FC30 Retro Bluetooth Gamepad | Gamepads | Drop
Amazon.com: 8Bitdo Ultimate C 2.4g Wireless Controller for Windows PC, Android, Steam Deck & Raspberry Pi (Lilac Purple) : Video Games
Amazon.com: 8Bitdo Gbros. Wireless Adapter for Nintendo Switch (Works with Wired GameCube & Classic Edition Controllers) - Nintendo Switch : Home & Kitchen
8Bitdo Retro Receiver for PS1 PS2 and Windows, Compatible with Xbox Series Controller, Xbox One Bluetooth Controller, Switch Pro and PS5/PS4 Controller - Walmart.com
8Bitdo Wireless Retro Receiver for NES Controller Fit for PS3/ PS4/ Wii Mote /U | eBay
8BitDo's latest Retro Receiver brings modern controller support to PS1 and PS2
8Bitdo Retro Receiver for PS1 PS2 and Windows, Compatible with Xbox Series Controller, Xbox One Bluetooth Controller, Switch Pro and PS5/PS4 Controller - Walmart.com
8BitDo - 8BitDo GBros. Wireless Adapter allows you to play Switch with your original wired controllers like Gamecube, NES, SNES, SFC Classic Edition and Wii Classic. Features HOME and Screenshot buttons for