Well here things get fun, as the title says, this is where Harry's Harem list will be.
1 - Lily Potter | Because incest is wincest.
2 - Rosy Potter | What's more wincest than incest? Twincest for sure.
3 - Bellatrix Black | She's obsessed with Harry, reason enough.
4 - Jean Lewis | She was kind of created specifically for Harry.
5 - Fleur Delacour | Fuck, of course, by the way, I'm going to make the veela have 2 peculiarities. The ability to measure how powerful someone is, mediating yadda yadda magic. And the ability to judge someone's personality by their magic (yes, complain if you want, see if I care.) And well, Harry is a Gamer destined to be the most powerful being in the world, and despite being Grey, he will be a Good Guy. So the Frenchwoman will be here.
6 - Susan Bones | Just yes, I like her.
7 - Daphne Greengrass | I like her too.
8 - Tracey Davis | Why not Daphne's friend too?
9 - Hermione Granger | I adore Hermione, so yes, our book reader will be here.
That for now ends the girls from Harry Potter's part, feel free to suggest someone if you want.
Now let's get to the Percy Jackson part.
1 - Calypso | Look, yes, I'm going to put her here because I love her, too bad for Leo.
2 - Rachel Elizabeth Dare | Yes, another girl who liked Percy. And hey, she's a redhead and has green eyes, Lily might like to have a second daughter just like her.
3 - Silena Beauregard | Look, Silena is cool, I love her. And she's hot, sorry Beckendorf.
4 - Aphrodite | Damn, do you think not?
5 - Hera | Maybe I'm being too brave, but I'll at least try, her marriage to Zeus sucks anyway.
Well yeah, I won't put Annabeth on because Percy needs some love too, plus I really liked this couple.
So, just like the HP girls, feel free to recommend another one from PJO too.