So, at this point, we can say that we have 10-11 paths. DPС himself says that players are too hung up on the concept of the main and side girl, which means that DPC wants to create dates for all these paths and prescribe plot branches.
1) Sage
2) Jill
3) Bella
4) Maya
5) Josy
6) Quinn
7) Lily
8) Envy
9) Riona
10) Zoey
11) Other others ( Nora, Jade, Sally, Melanie and Sarah, etc).
These 10-11 branches can be roughly divided into two groups.
Group A. The branches of the main girls. They will have the most intense branches, their paths will influence the plot of the game.
Group B. The branches of the side girls. Their branches will be smaller, but each of the girls from this group will get their own ending and storyline. I'm guessing some of these girls will have a negative attitude if MC fucks other girls ( Quinn) and some will be okay with it ( Lily, Riona).
The 11th path is the Other Others path, where I put the girls who probably won't have their own romantic endings and are just girls for the lewd scenes. I guess it could have been left out at all, since the 11th path will be on all branches of group B and will have no effect on the relationship with the girls from group B.