The one I have is called "Hardware Reference Library - Cartridge BASIC"
Item not permitted. Only games from computers can be added here, productivity software and OS not allowed to have entries. Doesn't matter what the media format type is, in this instance cartridge. So if you add any PC Jr game carts to PC section, just put in description that it is for IBM PC Jr models.
Media based cats are in error and will end up getting rectified in the future at some point. Because of that, there is no inclination to make additional media cats. I already took care of the VIC-20, but the C64 and Atari 8-bit will need to be resolved at some point.