I'm a Thor fan and I really like what the MCU has done with the character but as a Thor purist that read many of the silver age adventures I'm biased towards a more traditional Thor so you might not find weird my favorite movie is Thor: The Dark World. I also rank much higher the almost forgotten Incredible Hulk as I liked this movie, yes, the CGI wasn't there yet but that fight with the Abomination and many elements of the story were really well put together, so with that out of the way here's my ranking:
1) Thor: The Dark World
2) Thor
3) Thor: Ragnarok
4) Avengers: Infinity War
5) The Avengers
6)Avengers: Endgame
7) Avengers: Age of Ultron
8) Guardians of the Galaxy
9) Doctor Strange
10) Captain America: The First Avenger
11) Captain America: Civil War
12) Black Panther
13) Spider-Man: Homecoming
14) Captain America: The Winter Soldier
15) Iron Man
16) Iron Man 2
17) The Incredible Hulk
18) Ant-Man
19) Ant-Man and the Wasp
20) Iron Man 3
21) Guardians of the Galaxy, Vol. 2
22) Captain Marvel