Mini Snes additional games from other consoles on USB-HOST

[Aglae Pheryl]

Hi,

i have just used hakchi2.30 and installed 2 packages of NES & SNES games onto a USB host. Most of them work fine (following this tutorial : )
I have installed a few modules (not sure which of them I actually needed since they are quite a bunch of them through Retroarch I think).
The goal is to run other games (mainly Atari 2600, Intellevision, Coleco, Vectrax, C64, N64, GB/GBA/GBC, Megadrive/Genesis, Mame & Game & Watch (possibly more in the future).

I have a few questions:

1. What is KMFD (https://github.com/KMFDManic/NESC-SNESC-Modifications/releases/) and should I be installing it (if so how)?
2. What rom set should I be using for Mame ?
3. Sometimes I see different 'modules' for the same console (Gameboy, Snes...). Not sure which to use. Any advice?

Thanks,