From your list, ones I also like:
Mel Blanc. He's the boss of bosses in voice acting!
June Foray, EG Daly, Kevin Conroy, Mark Hamil, Phil Hartman (who, I believe, also did the cat in Kiki's Delivery Service!), all the voice actors/actresses from the Simpsons and Futurama, Daws Butler, and I'd like to add David Lucas, the voice of Cowboy Bebop and the Big O and a lot of other anime titles.
I'd also pick Arleen Sorkin (Harley Quinn), Dean Stockwell (Tim from ROTJ), Michael Rosenbaum (Ghoul from ROTJ, the Flash, Agent West), Melissa Joan Hart (the Dee Dees), Tom Hanks and Tim Allen from the Toy Story movies, John Goodman, Seth McFarlane, and finally, Kevin Smith (Silent Bob)!