Also for the trivia bin, we've had a number of Generals (mostly battlefield promotions) not mentioned so far who served as POTUS: Andrew Jackson, William Henry Harrison, Zachary Taylor, James K. Polk, James A. Garfield, Rutherford B. Hayes.
Panama Canal, conservation, trust busting and building up the navy. I guess I look for less active government . . . if you shrink the government or significantly slow its growth (as Eisenhower, Reagan, and Coolidge did) that's my list. Nobody else did that, including T.R. I think . . .