Sooo...
I didn't use AIO afterall, since my current Switch is still vanilla. I got into joycon_toolkit's source code instead and dare I say that this project looks COMPLEX !
I was able though, by improving on someone else's fork, to pull of a quick fix that should allow any pro controller to be detected properly (this fork also implemented support for third-party devices, but I didn't test it).
I basically have the coding knowledge of a fly looking at a bowl of alphabet soup so I am definitely not confident enough to provide a proper release, but to anyone that knows how to use visual studio, my fork can be found
there.
Please note that I just messed with like 2 lines of code so my controller could connect and just tested editing its colors, I have NO IDEA if anything else works at all...
(and no, that's not the color scheme I'm planning to keep xD)