Not many of them are there? At least, at the national level.
I've been thinking about this because there's been a lot of discussion about New Jersey Governor Chris Christie's weight and whether America would elect a fat guy as president. We generally don't, but we also don't elect bald guys and short guys either.
During my lifetime, only Bill Clinton leaned towards being hefty among presidents, but I don't think many considered him fat. Eisenhower was the only elected bald president, and he twice defeated another bald guy, Adlai Stevenson. Yeah, Jerry Ford was bald, but was never elected to the office. Short guys don't get much of a chance either as the shortest one in my memory was Jimmy Carter who actually was about the US average in height. He looked short and slight next to Reagan, however.
None of these characteristics have anything to do with intelligence and judgment, and I'm sure there are short, fat, bald men (and short, fat women) who would make fine presidents, but they may never get a chance to prove it.