Ranking of the best gym leader battle top to worst (considering only last versions on each one, PWT excluded)

N°1 https://www.youtube.com/watch?v=TuNObMHP_J0

2- Unova

3- Alola (I consider the Kahuna theme as the gym one of the no-gyms region)

4- Hoenn

5- Johto

6- Sinnoh

7- Kalos

my taste > your faggot taste