Nixon is a 1 and no one else on that list comes close.
Before he became VP, Nixon nailed Alger Hiss and exposed the communist rot of the State Department - as bad then as the Deep State is today.
As VP he nearly got killed in Caracas, Venezuela where he strongly debated with communists and anti-Americans. The attack on his motorcade was almost like Benghazi. Eisenhower had to send U.S. troops to rescue Nixon.
He unveiled American capitalism to Nikita Khrushchev by giving him a tour of one of our supermarkets and was known for his Kitchen Debate with Khrushchev where the Russian leader decried modern conveniences that made women’s lives easier. ( he may have had a point there - just kidding ladies )
I much preferred Nixon as VP than as President.