I believe the problem with hisaishi is he has a pretty even split. Aside from studio ghibli he doesn't do many anime and he's only done 3 game soundtracks.
this is probably the best site that has his noted works and if I'd have to make a safe assumption I'd say it's split 25% studio ghibli, 35% film, 35% solo/original works, 4% non-ghibli anime, 1% game?