525 historians and political science scholars got together and ranked all the Presidents. It sounds like the ultimate bar game for U.S. history professors. They releases their results recently here
As per usual, the report does no favors for the casual reader who might want to explore this data. So I put together an interactive app (open in a new window)
This is the beauty of Juicebox: if only one of those 500+ academics had asked, I could have given them a 10x better way to present their data before they released their PDF.