You make a good point. My hesitation, at first, to putting Reagan at the top was that had it not been for Washington, Lincoln, and Jefferson, there very possibly could have been no US. But, upon further thinking, Reagan did not save America ... he saved the world. This is much more important than any economic policies he pursued (though his economic policies are what got him victory in the Cold War).
Here is what I wrote about Reagan ... let me know what you think:
1. Ronald Reagan (Won the Cold War. Brought economic sanity for the first time. Earlier Presidents paved the way for a President Reagan to come to power. Yet, Reagan ensured that the world would not see a nuclear World War III and is the father of the unified free world we see today.)
That's very good. Perhaps one addition might be:
...he made it ok to again love America.