Starting with gen 5, GF put a bit more background for characters like gym leaders and E4, like Elesa is a model, Clay a mining company CEO, Skyla a pilot etc. I was trying to figure which job could old (but new too) gym leaders, E4s and Champions have. Some of them maybe have some info from the anime but I never watched it too much. Also, i wouldn't consider the ages that leak revealed too much.
>Gen 1
>Brock
Geologist
>Misty
Swimming teacher/professional swimmer
>Lt. Surge
Lieutenant, duh. Cant think for a civilian job for him
>Erika
Perfumer or botanist
>Koga
Being a ninja can be a job? Maybe he's the warden of Safari Zone
>Janine
Same as Koga
>Sabrina
Actress, we knew
>Blaine
Scientist
>Giovanni
Well, mob boss, probably has many other companies like Rocket Casino
>Blue
Researcher for his gramp?
>Lorelei
Marine biologist
>Bruno
Monk
>Agatha
Dunno, any ideas?
>Lance
Dragon tamer clan shit or something
>Gen 2
>Falkner
The male equivalent of a miko
>Bugsy
Bug-type expert, so entomologist
>Whitney
Softball player or takoyaki stand girl
>Morty
Gravedigger or medium
>Chuck
Weight lifter and trainer
>Jasmine
Lighthouse warden or mineral expert
>Pryce
Dunno
>Clair
Same as Lance, cant think anything else
>Will
Magician
>Karen
Model
>Gen 3
>Roxanne
Trainer school teacher
>Brawly
Personal trainer and surfer
>Wattson
Electrician
>Flannery
Onsen owner
>Norman
Another personal trainer?
>Winona
Meteorologist or wildlife caretaker
>Tate & Liza
They are too young to work
>Wallace
Dancer and Super Contest master
>Juan
Same as Wallace, or maybe waiter or butler
>Sidney
Rocker
>Phoebe
Medium or dancer
>Glacia
She has ojousama drill hair, she's filthy rich
>Drake
Ship captain
>Steven
Devon future CEO
1/3