If you consider RE more like an RPG I don't think you know what an RPG is.I would consider Resident Evil more like RPGs instead of Survival Horror.
I played alot of scary games both console & pc, the only series i didn't play was Fatal Frame.
The ones that's real scary: Snes Clock Tower, Silent Hill 4, Siren: New Translation, RE1, Haunting Ground, Dead Space 1, Alien Isolation.
But Siren is the scariest, because it took me a good 2 years to finish a what suppose to be 5 hours game.
Also not sure if anyone remembers "D" series.