I have two paths: "Melody" and "Everyone."
But honestly, the "Melody" path is actually "Melody and Sophia" because, well, that just seemed natural.
However, it seems that you must be Melody-only-and-nobody-else-stop-your-wandering-eyes to see unique content with her, so I have been temporarily unlinking "Sophia" for those moments and re-linking her afterwards.
I was expecting unique combinations of women would get you unique content per combo, but it seems to be that only path which has unique content and requires you to NOT be linked with others is Melody.
So, I am probably just going to change my M/S path to M, because I probably won't miss anything with Sophia between that path and the "Everyone," plus it will cut down any needs to link/unlink women for different content.