Okay, so here's my gym wants:
Dark Gym: I've been kind of making my own pokemon game, and this is how it went. The first gym is a dark type, with Zorua and Umbreon. When you first get to the town, there's no gym leader, and everyone panics because the last onje went missing. You talk to some odd looking sprite in a black robe, and he's the town's gardener who's always wanted to be a leader, and you kind of pep talk him (with your silence) until he agrees to step up. Because he's the gardener, he also gives you the HM for cut once you leave the gym. This HM allows you to go to the dreaded graveyard forest, where the jackolantern pokemon is!
Poison Gym: I think there should be a town in the middle of a forest, and this would be the one. You would need rock smash, this gym's HM, to get out of the forest because the exit is a cave. Anyway, the leader is Hypochondriac, Ironically.
Ground Gym: Lead by a farm boy about your age. This town is in a sort of cowboy ghost town outside a desert.
Water gym: This gym is lead by a little girl with a Slowking. The gym is inside a huge tower, and all the walls are aquariums so you'll see water pokemon swim by. At the top, there is only the gym leader and you battle standing on glass, so the water pokemon now swim underneath you. This gym is in the "big city" of the region.
Electric Gym: lead by some tall girl with ADD. Her hair could be yellow and spike in all directions.
Bug Gym: There's only been one, and it was early on. So here's another one, farther in the game. It could be lead by some Zen Guy~
Dragon Gym: Lead by some sort of female.
Grass Gym: And finally, our super tough grass gym! Lead by some studious guy.
Pokemon League:
Normal
Rock
Psychic
Fire
No Type.