Absolutely. Picked up Sphilia and I just found out thanks to your post that Adelaide was still around. I remember playing it a while ago, but couldn't find it again because it got snapped from the site.
One other recommendation I have that is incredibly different from everything on your list, and is almost completely based on your imagination, is Artificial Academy 2 by Illusion. It is 100% a sandbox game without any story whatsoever in a class full of 25 characters (that you yourself can create), but you can set-up specific scenarios thanks to new mods and stuff. And - specifically - you can set it up so you can have one (or 23) lover(s) who you can setup to have sex with anyone in the class and still have her or him be your lover. A simulated Ruins of Luxoria, if you would. I've been playing it since it's initial release (2014-ish) and it's one of the best ones out there in current day thanks to the modern modding scene.