I don't disagree with most of your rankings, but I'd put the presidents who got impeached at the bottom (Johnson clearly the very worst) and put Hoover at the best of the worst - or not on this list at all. I see him more as unlucky than anything else - and then he followed his economic advisors (details in Ahamad's "the Bankers who Broke the World"). I'm not sure Coolidge (his predecessor) could have done any better.

Also, Wilson belongs on this list, if only for not stepping down when he was incapacitated. It's quite likely that his not standing up to England and France at Versailles was part of this - and that treaty led to the disaster of WWII.