@Teeqla I was skimming the internet trying to do a project similar to yours and was wondering if you have had any success with the Linux Joystick Mapper and if you might be able to share it if you have?
I've got the first twist on Nickell Andrew (riking) running.
When I start the Joy Con driver via an SSL-Shel it works fine.
But I do not manage to start the driver automatically at system startup.