Kanto
Pewter Gym Leader-
Cerulean Gym Leader-
Vermilion Gym Leader-
Celadon Gym Leader-
Fuchsia Gym Leader-
Saffron Gym Leader-
Cinnabar Gym Leader-
Viridian Gym Leader-

Elite Four
Member 1-
Member 2-
Member 3-
Member 4-
Champion-

Hoenn
Rustboro Gym Leader-
Dewford Gym Leader-
Mauville Gym Leader-
Lavaridge Gym Leader-
Petalburg Gym Leader-
Fortree Gym Leader-
Mossdeep Gym Leader-
Sootopolis Gym Leader-

Elite Four
Member 1-
Member 2-
Member 3-
Member 4-
Champion-

Johto
Violet Gym Leader-
Azalea Gym Leader-
Goldenrod Gym Leader-
Ecruteak Gym Leader-
Cianwood Gym Leader-
Olivine Gym Leader-
Mahogany Gym Leader-
Blackthorn Gym Leader-

Elite Four
Member 1-
Member 2-
Member 3-
Member 4-
Champion-

Sinnoh
Oreburgh Gym Leader-
Eterna Gym Leader-
Veilstone Gym Leader-
Pastoria Gym Leader-
Hearthome Gym Leader-
Canalave Gym Leader-
Snowpoint Gym Leader-
Sunyshore Gym Leader-

Elite Four
Member 1-
Member 2-
Member 3-
Member 4-
Champion-

Unova
Striaton Gym Leader-
Nacrene Gym Leader-
Castelia Gym Leader-
Nimbasa Gym Leader-
Driftveil Gym Leader-
Mistralton Gym Leader-
Icirrus Gym Leader-
Opelucid Gym Leader-

Member 1-
Member 2-
Member 3-
Member 4-
Champion-

((To soon be edited.
I'll use this to help me: http://bulbapedia.bulbagarden.net/wiki/Gym ))