Iron Man
The Avengers
Guardians of the Galaxy
Captain America: The Winter Soldier
Captain America: Civil War
Doctor Strange
Ant-Man
The next group of movies (those in the 75-80 range) would include:
Avengers: Age of Ultron
Captain America: The First Avenger
Thor
Iron Man 3
Those on the bottom of the list (but still above-average movies):
Iron Man 2
Thor: The Dark World
Incredible Hulk