My opinion is that Obama was the worst as well as the worst man. Carter next. LBJ may have done the most harm. Clinton was right up there with Obama as far as being corrupt as a man and as a politician.
My Father hated Eisenhower from the time he was a combat veteran of WWII until he died. I don’t think he was that bad but he did appoint Earl Warren.
Eisenhower and Nixon were bitter disappointments to conservatives, who still voted for them.
Ike appointing a solid Republican, like Warren, to the Supreme Court made sense.
It was like Henry II appointing his friend Thomas Becket Archbishop of Canterbury.
Once both men were confirmed to their new positions, they acted very differently than those that appointed them thought they would.