Thanks to grildensnork for the original insert (https://www.thingiverse.com/thing:6231852). I really liked the design but wanted to tweak the goods section to separate each type, and to add a section for the solo cards that I'd printed out. I've included files for the full insert here for ease.

It supports vertical storage and sleeved cards.

Print 4 of the players file, 2 of the good remix, and 1 of everything else.

My print in the photos is hashed as I print without tops/bottoms/walls to save on filament.