In all of American history, lotsa old white men with much higher body counts. Biden's banal evil doesn't hold a torch to someone like Andrew Jackson.
In modern history, I'm pretty sure George W still beats out Biden on every measure, The only difference being George W could draw a clock.
He is an evil decrepit monster, but within the Pantheon of evil that are former US presidents, I'm not sure he breaks the top third most evil.
Funny bit.
Now tell me how sad you are that Carter died.