If you want to start your own archive from your physical disc collection:
If you aren't playing on original hardware, Dolphin is the premier way to enjoy your archive. It supports WBFS files natively and can upscale games to 4K resolution, making decade-old titles look modern. 3. USB Loader GX / WiiFlow Wii Wbfs Rom Archive
These are raw, 1:1 copies of a Wii disc. They are always 4.37 GB, regardless of how much actual data is on the disc. If you want to start your own archive