I've heard him speak highly of some of those movies as well, like Bronco Billy and Honkytonk Man.
I find it interesting that The Outlaw Josey Wales is the oldest and the only movie from that era of his career that he listed.
With this list being kind of old now, I wonder if he'd list any of his newest movies on there like American Sniper.
Usually, The Outlaw Josey Wales is considered as his first masterpiece as a director: in my opinion, it remains his best film of the 70s, with Dirty Harry. I would add Play Misty for Me, High Plains Drifter, Breezy, Bronco Billy, Honkytonk Man, Pale Rider and A Perfect World among his best pictures.
About his films released since 2008, Changeling, Gran Torino, American Sniper, The Mule and Richard Jewell are perhaps the best films he made. After Gran Torino, many films seemed essentially made for keeping Clint busy (Invictus, Hereafter, Jersey Boys, The 15:17 to Paris). They did not very well at the box office.
J.Edgar is interesting because it was not that bad but especially misunderstood and unexpected: most of the mainstream audience did not care about the intimate life of the main character. Moreover, making Leonardo DiCaprio look older and uglier did not appeal the audience too. They probably expected a film like Public Enemies directed by Michael Mann.
American Sniper is an important film because he was not only successful at the box office and boosted his latest career but also because this film had a true resonance with the themes developed by his films. Even if American Sniper divided the audience because of ideological reasons, it is still a great film.
Sometimes, I wonder what A Star is Born would look like, if Clint directed it instead of Bradley Cooper.
Eventually, if Clint updated the list of his favorite films now, I am not sure that it would be so different from the one he gave in 2010.