How Does Rocksmith Sort Custom Tunings

I tried searching but didn't find an answer. Hopefully somebody knows.

Is anybody familiar with how Rocksmith handles the sorting of Custom Tunings? Some odd tunings seem to be haphazardly placed wherever the game feels like. Recent example I noticed was an Alter Bridge CDLC was tuned to Db Gb Db Gb Ab Db, and Rocksmith placed it within the Drop C section. To me, the tuning is an alteration of Db Standard as 4 of the strings are within that tuning (-3 steps down) where as not a single string lines up with Drop C.

I'm trying to wrap my head around how it decides where to place these tunings as it drives me nuts having things in wrong places. I'm tried to add some custom tunings within RSMods but it still stays in this "wrong" place. It still dumps it at the top of the Drop C section and now renamed the entire Drop C section to " Db Gb Db Gb Ab Db ". Even without RSMods installed, it appears at the top of the Drop C section.

If anybody knows how the game decides where to put songs, I would love some insight. I'm not great with programming but would like to see if I can get things lined up in a way that makes more sense.