Given that the main quest of the franchise involves the gym challenge i'll judge only based on the gym leaders.
>Kanto: 4/10 fuckable gym leaders
Erika, Misty, Sabrina, Janine
>Johto: 3/8 fuckable gym leaders
Jasmine, Whitney, Clair
>Hoenn: 4/10 fuckable gym leaders
Roxanne, Flannery, Winona, Liza
>Sinnoh: 4/8 fuckable gym leaders
Gardenia, Fantina, Maylene, Candice
>Unova: 5/14 fuckable gym leaders
Lenora, Elesa, Skyla, Roxie, Iris
>Kalos: 4/8 fuckable gym leaders
Viola, Korrina, Valerie, Olympia
>Galar: 5/12 fuckable gym leaders
Nessa, Bea, Melony, Marnie, Clara
>Paldea: 4/12 fuckable gym leaders
Katy, Iono, Tulip, Grusha
>Top 7 fuckable gym leaders
1. Skyla
2. Elesa
3. Jasmine
4. Roxie
5. Winona
6. Nessa
7. Sabrina
Unova wins