This software can allow you edit the order of your files saved in the SD card or other USB storages. So this is also working for changing the order of the games list in SD card.
You can get older ones even like the pi 3,4 for cheap, but they don't play gamecube, Wii etc very well. Be warned they use a Linux os, which you need to load onto a micro SD card yourself. You can find pre built images like "retro-pie" online free tho which makes it easy to setup.