We currently use MUOS/info/name/content.json to override the display labels if the assigned system uses the name lookup function (primarily Arcade systems) however there has been a case where Arcade Romhacks have the same name.
It is unfortunate that MAME utilises specific names to check for compatibility afaik. So my idea is to check for a content.json within the catalogue system before checking the global one.
We could then go into MUOS/info/assign and duplicate Arcade.ini to Arcade Romhack.ini. Then Change the following in Arcade Romhack.ini to:
[global]
name=Arcade Romhack
default=FinalBurn Neo Amped
catalogue=Arcade Romhack
lookup=1
governor=ondemand
Then go into MUOS/catalogue and copy the Arcade folder to Arcade Romhack.
This might also be another idea but perhaps rename Arcade to Arcade Horizontal and add another Arcade Vertical to differentiate between all three types of arcade content?