Bruh. You're taking what I said in an ultra literal way. What I mean by a traditional FNAF style in a hentai game is being in an office controlling security cams and not walking around doing a whole bunch of other shit. It doesn't have to be exactly like the original FNAF game.That's not traditional though. The traditional FNAF style is just looking through the cams, closing the door and using the light when needed. There's plenty of those around and not one hasn't gotten boring for me after 2 nights of it.
The only one I come back to semi-regularly (if I could remember what SDD I stored it in) is a 3D one where you can watch the girls move in real time, give them stuff to do to distract them and not only getting caught but depending on how you get caught gives a different scene. Like one scene happens if you close the door on Freddy when she's already partly in the room, she gets stuck in the door and you take advantage of that. Another is chika will sneak into your room if you don't watch her and stand behind you for awhile before attacking you. If you get caught by another girl while she's in the room, it starts a 3P.
And yeah it sounds like you're referring to Fuck nights at Fredrika's by Smutcube which to me is pretty much the first and best of the FNAF hentai games. Unfortunately the dev has just been slowly but surely milking it for the past 3 years or so and hasn't added anything interesting or significant to the game since then.