Leaf likes to fuck her man (Red) constantly. She is a sex freak. She plays this part of a strong independent woman but Red knows she is a needy fragile girl.
Kris is still a virgin. She only cares about science and research. She is kinda boring.
Lyra tries to be this playful cute girl, but everyone knows that deep down she is a catty bitch. She is not liked by her peers.
May is athletic and sexy and she knows it. She is very careful with sexual partners, though, because she knows how to valorize herself.
Dawn is so girly. She paints her nails and read magazine, while talking about boys with her best friend and her gay friend. She also is aware of the effect she has on men and uses that to her benefit. But she is a good girl and she never makes her simps do that much for her.
Hilda likes to experiment. She is pretty kinky in bed, but she doesn't really care about this kind of stuff. She is highly competitive and that's her focus. But sometimes, she needs to let out some steam, and that's how she uses her fuckbuddies N, Hilbert and Rosa in their purely sexual relationships.
Rosa is sweet and naive. Unfortunately, too naive. People often take a lot of advantage of her because she just trusts people. Hugh, Nate, Hilda and a random Hitchhiker all used her sexually.
Moon is a pothead, like most people in Alola. But she isn't too exaggerated, she just smokes after a stressful day of training. She really takes responsibility for saving the world and knows the champion has duties.
Elaine is a basic bitch. She talks like a Valley girl and everyone in Kanto hates her.
Gloria is a proud lesbian. But, you know, those sexy ones. Her girlfriend is Marnie, of course. Gloria tops and Marnie is a powerbottom. The memes about Gloria being a Scottish drunk were partially wrong - she likes to drink but she ain't no disgusting slobs.
That's the canonically personality of the pokégirls.