Two notes:

1. Will not include anything on my FanonDiscontinuity list. Thus, the only Post Endgame ones will be the Spiderman films, Guardians 3, and The Marvels.

2. Unpopular opinion warning: Thor: The Dark World and Captain America: Civil War's placements may be controversial. I just didn't like the tropes in Civil War, "vilify the hero" and MisplacedRetribution, the Accords situation felt like a stain on the MCU, making it darkly realistic which, realism in epic and sometimes funny superhero movies should be for comedy purposes not darkness that you're trying to escape from, darkness is best served from straight-up villains and up until now the series was epic and fun. Likewise, The Dark World has comedy (mostly from Loki) and epic battles, including an awesome final battle with Malekith who, while lacking personality, felt compelling, sinister, and threatening at least.

So with no further ado...

26: Captain America: Civil War

25: The Incredible Hulk

24: Ant-Man and the Wasp

23: Spiderman: Homecoming

22: Captain America: The First Avenger

21: Captain America: The Winter Soldier

20: Avengers: Age of Ultron

19: Iron Man

18: Thor

17: Ant-Man

16: Spiderman: Far From Home

15: Guardians of the Galaxy Vol. 3

14: Captain Marvel

13: The Marvels

(Cats had a huge part in getting those last two as high as they are, plus a glorious spectacular MVD in The Marvels which is in short supply in Post Endgame, and the crossover)

12: Iron Man 2

11: The Avengers

10: Spiderman: No Way Home

9: Iron Man 3

8: Guardians of the Galaxy Vol. 3

7: Black Panther

6: Thor: The Dark World

5: Avengers: Infinity War

4: Avengers: Endgame

3: Thor: Ragnarok

2: Doctor Strange

1: Guardians of the Galaxy

1. Guardians of the Galaxy
2. Doctor Strange
3. Thor: Ragnarok
4. Avengers: Endgame
5. Avengers: Infinity War
6. Thor: The Dark World
7. Black Panther
8. Guardians of the Galaxy Vol. 2
9. Iron Man 3
10. Spiderman: No Way Home
11. The Avengers
12. Iron Man 2
13. The Marvels
14. Captain Marvel
15. Guardians of the Galaxy Vol. 3
16. Spiderman: Far From Home
17. Ant-Man
18. Thor
19. Iron Man
20. Avengers: Age of Ultron
21. Captain America: The Winter Soldier
22. Captain America: The First Avenger
23. Spiderman: Homecoming
24. Ant-Man and the Wasp
25. The Incredible Hulk
26. Captain America: Civil War