I assume you're only counting games for PS4. GT6 never came out on PS4.
But I gotta go with Insomiac/Naughty Dog. But most of them are fantastic studios.
There's only 2 races: White and 'Political Agenda'
2 Genders: Male and 'Political Agenda'
2 Hairstyles for female characters: Long and 'Political Agenda'
2 Sexualities: Straight and 'Political Agenda'