I made a track for my game, yeah, but using UGEtracker which is built into GB Studio. It's not the easiest to use tbh so it wasn't that fun.
LSDJ sounds very cool, have you checked out the DirtyWave M8? I ran the cheap version (Anbernic console with a dongle) but I couldn't get over the learning curve. Now I have a Polyend Tracker Mini which I really like
BTW I'm not really a programmer either, GB Studio simplifies things a lot and it's free if you want to check it out
I haven’t kept up with anything chiptune related in prob 10 years or so, so no I am not too familar with any new tools for the GB. I did enjoy making music on it though. It fun to work creatively when there are a bunch of limitations!