I guess infamous for is probably defined as “whose name can we remember who was really bad?”
First you need to define the context.
Lee Oswald is infamous to the 180 million or so Americans, and a few others out there.
But to someone in Japan, I am sure the list would include Harry Truman and Curtis LeMay.
Thanks for reminding me about Japan.
Why isn’t Yoko Ono on the list?