Ian Montgomerie
Mike Collins
Radical Neutral (after he grew up and learned to spell, he changed his real name to "Radical Neutral")
Jefferson Davis
Thomas Edison
Douglas Fairbanks (and his wife, Mary Pickford, was VP)
Shirley Temple Black
Johnny Carson
Pat Paulsen
Wally Cox
Paul Reubens
Don Knotts
Now I'm just being silly.

They wouldn't all be president in the same timeline.
(Shirley Temple went into the diplomatic service, so maybe she could have been...Reagan gets assassinated, Bush becomes President and chooses her as VP, he serves two terms and she gets elected in 1988.)
Mike Collins
Radical Neutral (after he grew up and learned to spell, he changed his real name to "Radical Neutral")
Jefferson Davis
Thomas Edison
Douglas Fairbanks (and his wife, Mary Pickford, was VP)
Shirley Temple Black
Johnny Carson
Pat Paulsen
Wally Cox
Paul Reubens
Don Knotts
Now I'm just being silly.
They wouldn't all be president in the same timeline.
(Shirley Temple went into the diplomatic service, so maybe she could have been...Reagan gets assassinated, Bush becomes President and chooses her as VP, he serves two terms and she gets elected in 1988.)