Game Boy Advance [CN] sub-cat added to Game Boy Advance cat.
sub-cats in GBA do not have manufacturer. The actual iQue GBA has the GBA name on the box. ique present in the abbreviation, but it is only for reference. Any CN game can go into here (and thus all non AU/EU/JP/NA games would get moved into here whether they are for Nintendo GBA, iQue or a bootleg.
iQue DS sub-cat added to Nintendo DS cat.
Because this is specific, this is only for iQue DS branded games. CN, boot, worldwide DS games would still reside in the JP sub-cat.
the N64 item, is branded as Nintendo iQue 神游机
Google translate has this being Senyou Ji or Shenyou Machine.
As you say there are no physical release games. Things like this:
https://jp.mercari.com/item/m66196746049Are just a box and manual, I think they would be better of as an Accessory. However the console itself is not actually a "console" in our definition, it is a Dedicated Console. So the console would go into Dedicated Consoles and the game/instructions boxes would go into Other Accessory.
There has never been any approval to add digital games for non-internet games. No Sega Channel, Xband, Satellaview, etc games were to be added, despite our expanded ability for being able to add them to backlog, currently playing or finished lists. Neither do we track specific Blockbuster Game Factory type cartridges but we do track the cartridges on their own, just not with games written to them. Disk writer service for Japanese computers are tracked.
So that iQue N64 won't get any categories for it or its games.