The gyms are as the gymleader wants so they can be any available type.
Gym leaders must be able to make a good gym for them selves
(Gyms)(Type next to number means taken)
1: Flying
2: Fire
3: Water
4:Open
5: Fighting/Ground
6: Grass/Bug
7: Ghost/Dark
8: Dragon
(Types available)
Electric
Fighting
Poison
Ground
Psychic
Rock
Steel
Ice
(I will PM you the server ip and any additional files to download)
Some server pics from one of the gym leaders