I came up with an order to include the most important Netflix MCU seasons, a season of AOS (given the Nick Fury cameo) and a season of Agent Carter. Some of it is just vibe based. I tried to stay away from conflicting timelines regarding post-credit scenes, although it was inevitable for Black Widow.
Netflix MCU comes before Civil War as to not raise the question why they weren’t being locked up after the Sokovia Accords. Not sure yet about the placement of the Daredevil: Born Again seasons.

Phase 1

Iron Man
The Incredible Hulk
Iron Man 2
Thor
Captain America: The First Avenger
Marvel’s Avengers
Agent Carter: Season 1

Phase 2

Daredevil: Season 1
Jessica Jones: Season 1
Iron Man 3
Daredevil: Season 2
Agents of S.H.I.E.L.D.: Season 1 - Part 1 (1x01-1x06)
Thor: The Dark World
Agents of S.H.I.E.L.D.: Season 1 - Part 2 (1x07-1x16)
Captain America: The Winter Soldier
Agents of S.H.I.E.L.D.: Season 1 - Part 3 (1x17-1x22)
Avengers: Age of Ultron
Luke Cage: Season 1
Iron Fist: Season 1
Ant-Man
Marvel’s The Defenders: Season 1
The Punisher: Season 1
Doctor Strange
Guardians of the Galaxy Vol. 1
Daredevil: Season 3

Phase 3

Captain America: Civil War
Black Widow
Black Panther
Guardians of the Galaxy Vol. 2
Spider-Man: Homecoming
Thor: Ragnarok
Avengers: Infinity War
Ant-Man and the Wasp
Captain Marvel
Avengers: Endgame
Spider-Man: Far From Home
Hawkeye: Season 1
Spider-Man: No Way Home

Phase 4

Loki: Season 1
WandaVision: Season 1
Thor: Love and Thunder
The Falcon and the Winter Soldier: Season 1
Guardians of the Galaxy Vol. 3
Eternals
Captain America: Brave New World
Doctor Strange in the Multiverse of Madness
Thunderbolts*
Loki: Season 2

Phase 5

Fantastic Four: First Steps
Black Panther: Wakanda Forever
Agatha All Along: Season 1
Shang-Chi and the Legend of the Ten Rings
Visionquest: Season 1
Ms. Marvel: Season 1
Ant-Man and the Wasp: Quantumania
The Marvels
Spider-Man: Brand New Day
Avengers: Doomsday
Avengers: Secret Wars