So, here is a document that gives a pretty exhaustive list of famous people who are or once were stutterers. I must say that, for some, I have some doubt as to the veracity of the claim that they were or are stutterers. I have my own reasons for having this doubt, but I am not sure of the value of sharing the reasons. So, I'll just leave this here for you to examine for yourself. Be well!
Link - 18 famous People Who Stutter!
"Kenyon Martin, Bill Walton, John Stossel, James Earl Jones, Carly Simon, Mel Tillis, Alan Rabinowitz, Robert Merrill, Winston Churchill, Marilyn Monroe, Ken Venturi, Bob Love, John Updike, King George VI, Frank Wolf, Nicholas Brendon, Lewis Carroll, Annie Glenn, Darren Sproles ... all famous and successful. And all stuttered"