The entire game (that is great porn btw) is a sterotype with a BDSM humiliation twist.
Am I getting it?
I'm sorry but: No. Not really. The whole point of this game being more about characters studies, to let them be more then just the most reductive list of character traits. Rather than only being a waifu simulator.
And a great way to do so is offering mirrors and parallels. Lucy, Victoria, Rose can all be condensed to the same shit description: 'mothers who turned to sex work for their kids benefit'
But each of their characters are very different, Lucy is vain and her motives selfish but in her own way non-duplicitous, unable to shield her emotions or her secrets which makes her easy to manipulate, meanwhile Rose is anything but vain, nor are her motives selfish, but guards her emotions and is certainly not above trying to be the manipulator instead.
Victoria has already been discussed in how her character interacts with Rosalinde her arc, but again, her character is still different, them both of them, more grounded, lighter, happier.
in the end none of them are actually merely a stereotypical trope. Even if they can be reduced to such if you just cut away all that makes them their own person. And in the story each character of them and how they act in similar circumstances informs on the other for the player. It tells you who they are, and who they are not. Would I qualify it as high literature? Not really, but it is clearly done for a reason, and for a porn story it's done quite well and enjoyably so.
Now of course, people can differ on if they like that level of character building in a porn story and people can certainly want just "the mom type", "the sporty chick", or the "whore with a heart of gold" or instead "the brunette", "the redhead" or "the blonde" in a harem waifu simulator and be done with it. There isn't anything wrong with that.
Those games are very popular for a reason. But for many the fact that here in this game it's turned into "this specific blonde" instead of just any blonde or "that particular mom type" instead of generic mom type is what makes it stand out. It's the seasoning that makes the dish.