To get all these controllers to to play nice with each other on one pc took 5 seperate retroarch installs running independent from one another, usb hub with switches, wii u adapter,
NHL'94 Online - Controller Setup
How to map xbox controllers in Retroarch and Mame core - YouTube
How to setup 6-button controller? | Recalbox Forum
How To Set Up A N64 Controller On Raspberry Pi RetroPie Systems - RetroPie Guy - YouTube
Mapping gamepad controls in RetroPie (for MAME2003 arcade games) - Raspberry Pi Stack Exchange
RetroArch
Retroarch Configuration Herbfargus Edited This Page - Retropie Ps3 Controller Layout Transparent PNG - 2301x1428 - Free Download on NicePNG
RetroArch] Every Controller is Not Created Equal : r/emulation
HOW TO MAP PS4 & PS3 & PS2 CONTROLLER / CONTROLLER MAPPING on RetroArch - YouTube