Before diving into the list, you need to understand the technical bottleneck. The Nintendo Wii was released in 2006. Its USB ports are (not 3.0/3.1), and they provide limited power. Crucially, the cIOS (custom IOS) that enables USB Loader GX to work—specifically d2x cIOS—has well-documented quirks with certain USB controller chips.
is the gold standard for compatibility with both Wii and GameCube games. : Drives up to usb loader gx usb compatibility list
Drive capacity and MBR limits