We got Timestamps which is back to the future type with doing your younger Mom, etc. We've got Lust Theory which is all family oriented, we've got Summer with Mia...cough "Returning to Mia", Shut Up and Dance, Seducing the Devil, and the list goes on, and on.
I think it goes by who the person/s who happen to be there that day to take the consideration into account. Hell, maybe they got someone like me who's okay with it and green lights one game, and someone who's a prude and doesn't like that and rejects it...I'm sure it's more involved. Just saying maybe devs/games get unlucky who their reviewers are and get reject
and some games get very lucky with who's reviewing the games application to be accepted.