Basically, i go for this info, collected here:
http://maws.mameworld.info/maws/And they aren't obscure names. Kaneko, Visco, Seta, Universal, Mitchell, Raizing, Video System, etc?
If we are talking 'normal' people like family or friends not used to games, those are just as obscure to them like, SNK, Data East and the others are.
It's your choice of course, of what you want to do on your build and your emulator, but an option for us to change the manufacturer info on CoinOPS could be well welcomed, at least for people like me that like the correct info on the front end.
'Other' is nothing, besides also the ones that aren't correct on the NeoGeo driver and so on.

CoinOPS is a good emulator to play with your family because it's user friendly, and most of those persons don't know what's neogeo and so on of course, but imagine this scenario: They could like a game by Visco or Kaneko for example, and decide to try more games of that manufacturer to see if they find more games they like and this option helps on that.
Regarding the first part of the list being clutter, like i told you, i can send you in other format if you want.

I think the easier way is the user being able to change that info like you can on the genre for example.
It's a lot of trouble both for me and you if we do this to check all these games, but i feel it makes the experience more 'complete' so to say.
Many thx again.