All Avengers line-ups... here!!! (Endgame Spoilers)

I don't know if Quicksilver was ever an Avenger was he?

At the end of Age of Ultron didn't Iron Man quit the Avengers, Hulk vanished and Thor went home and it was only then they showed Falcon, War Machine, Vision and Scarlet Witch as joining the new team.

Falcon and War Machine weren't Avengers until the end of Age of Ultron, after Quicksilver was dead, IM semi-retired (again), Hawkeye went on hiatus and Thor went in search of the infinity stones.  So the lineups for Age of Ultron shift quite a bit.

It starts off with the original six (even though Rhodey and Sam are at the part, they aren't Avengers.), then expands to Wanda and Pietro with Vision joining shortly thereafter.  War Machine takes part in the battle of Sokovia but it's unclear if he's officially an Avenger at this point.  Quicksilver is killed during the battle.    

By the end of the film, the lineup is 

Captain America
Falcon
Black Widow
Vision
War Machine
Scarlet Witch

The Avengers lineup in Civil War also goes through changes due to the team splitting up.  

So it starts off with the end of AoU lineup but splits into splinter groups.  Cap, Falcon, and Scarlet Witch leave the team (joined by several other heroes but they aren't the Avengers at this time).  It's also unclear if Black Panther is given Avenger status in this film or if he's only assisting Tony (I'd lean toward him not technically being an Avenger).  We know for a fact Spider-Man is not an Avenger despite being recruited by Tony for this particular mission.     

Honestly IW was so chaotic that I'm not sure who was actually considered an Avenger in that one.  The only one I know for sure was Iron Man and technically Vision, though IM says he went off the grid.

Iron Man, Hulk and Thor weren't on the pre-CW Avengers, they left at the end of AoU.  Tony took charge of the team when Ross approached him with the Sokovia accords, Thor and Hulk were off world.    

2 ftw