Only name 30ish after about ten minutes. And I know there are several easy ones I couldn’t name but know who they are.

Homer
Lisa
Bart
Maggie
Marge
Moe
Krusty
Barney
Smithers
Mr burns
Superintendent chalmers
Skinner
Grounds keeper willie
Apu
Selma
Grandpa Simpson
Ned Flanders
Mod flanders
Sideshow bob
Reverend love joy
Dr nick
Troy McClure
Alien guy
Real doctor
Patty
Mrs krabbapple
Reverend love joys wife
Flanders 2 sons
Mayor
Ralph wiggam
Police chief wigam
Karl
Lenny
Nelson
Barts friend with glasses
Professor frink
Twin girls barts age
Sideshow Mel
Two cops