So what I'm thinking about is like how the actors from The Addams Family TV show really match up with the original comic book versions of those characters.

My list starts with:

Jamie Farr - Savoir Faire from Underdog
Donald Trump - Simon Bar Sinister from Underdog. Especially from the arc titled Weather the Storm. https://youtu.be/rJSNuEPVV0o?si=vjwrGI4xKVyjyoGe
Bob Costas - Sherman from Rocky & Bullwinkle
Wilford Brimley - Inspector Fenwick from Dudley Do-Right
June Lockhart - Nell Fenwick from Dudley Do-Right
Barbara Eden - Penelope Pitstop from The Wacky Races
Maurice Chevalier - Pepe LePew from Looney Tunes

I know there's more. Who would you add? Try to steer clear of actors who voice a cartoon character like Don Adams as Tennessee Tuxedo. Also no actors from shows that became cartoon which resemble them or that they voiced like Gilligan’s Planet

Mary Jane Croft - Sweet Polly Purebread (Underdog)
Jack Dodson - Stanley Livingston (Tennessee Tuxedo)

Besides Bob Costas looking like Sherman from Mr. Peabody & Sherman, current House of Representatives speaker Mike Johnson looks even more like Sherman than Costas does.