The only ones that I consider actual Love interests are the Main Girls (Sage, Bella, Zoey, Maya and Josy, and Jill)
with the Pseudo Love interests (Lily, Nicole, Quinn, Riona, Sally)
and everyone else is side chick or just fuck buddy atm
YES, that is including yoga girl because frankly we got no information on her so unless she gets substantial spotlight in EP12 to be in pseudo love interest, she is atm a side chick.
See, this is a good observation.
This is more than enough for a story of this design.
As such I would replace Sally with Nora, as she is the stand out in the Others path that you've listed. All characters are slowly going monogamous. Lily/Nicole is a choice, along with Quinn and Jill. Riona is part of this in it's own "flavor" of Lily/Quinn/Sage/Melanie/Sarah/Camila, but a different personality. Sally, I would omit as anything relevant at this point, unless she was near the beginning. It's like DPC just wanted to create someone with a tsundere personality, because Others is all about variety. But it's too late in the game.
The Side Chicks should be established. We should not need more. The only argument would be Others is all about just being the manwhore, but not developing these side characters. As much as we like Tara and Tiffani's personality, it's too little too late, and would seem like a waste of narrative if they suddenly became Main Girls/Main Paths.
As such, DPC should stop wasting his, and our time, and just focus on what he already has made.
(Therefore, the Cinderella should just be a Side Girl, on the Others path, and nothing more.)