Interesting contrast of the Roosevelts with the Presidents from Nixon to Obama. TR and FDR were essentially traitors to their class, as their contemporaries called them. Rich men from inherited wealth concerned about the treatment of those who did not have advantages. Nixon and Reagan, self made men from the lower middle to the Upper Middle trying to appease the wealthy. Carter, Clinton, Obama middle class ( lower to mid ) reaching down or trying to help their own socio-economic class. Bush Sr and Jr, inherited wealth, trying to maintain the economic status quo and help the rich, their own socio-economic class.
Only the Roosevelts seem to disregard their personal self interest, economically, for purposes they see as greater. I'd put Eisenhower in that class but for different reasons. JFK wanted to be TR and FDR, but it was all vain-glorious to the Kennedys