Have you ever heard of #CDLC format for guitar “sheet” music? It’s been on my TODO list to look into for months, but reading your post brought it to mind. It’s basically what Rocksmith used, and there are players and ways to write your own.

customsforge.com/ is supposed to be a good resource.

CustomsForge - Rocksmith 2014 Remastered CDLC

A website dedicated to custom songs for Rocksmith 2014 Remastered.

^{CustomsForge - Rocksmith 2014 Remastered CDLC}