Apparently can't reach Loyalty 6 with anyone. The bar for the girls gets to 3, and then ceases to go any further in the phone - assuming that the bars and numbers under each girl's profile picture in the phone is their Loyalty stat and progress?
X in the basement, assuming that all the darkened profiles besides the Patreon exclusive ones means “need higher loyalty?” Or does that just mean they aren’t available for that? Either way, the bars just stopping at 3 when a quest says they can go up to 6 had me confused. It being a number and bar with no extended tooltip didn’t give me much to go on.