Hailtown: ???
Raintown: ???
to be able to compete in the 2nd gym saga, you MUST have completed the hail and raintown gyms.
2nd Gym Saga
Onyx village Gym: ???
Lightning tower gym: williamgreen
to compete in the 3rd gym saga, you must have ev trained at least one pokemon.
3rd Gym saga: battle dojos
knuckle dojo leader: ???
iron dojo leader: ???
to compete in the league practise gyms, you must have ev trained at least 6 pokemon and have an ev trained team.
Final Gym saga: league practise
Earth island Gym: ???
Rainbow city Gym (mixed types): shadowstone
if you want to be a gym leader in one of these empty slots, post on here