Gonna be honest I voted for them all haha. It's just that the creativity of the game has to work with the art. For example one thing that stood out with futanariums gate is that it had these hand-drawn supernatural powers along with some eldrich/lovecraftian scenes that really clicked with the creator's artstyle.
Hand drawn if creative in either the concrete sexual acts (like showing their own version of an X-Ray view of a penetration) or suggestive content. Otherwise, most realistic wins.