Silvestri’s Cap America Theme in MCU

The wikipedia page for Captain America: The First Avenger soundtrack says that Silvestri’s theme is the first to be used in other films within the MCU – being used in The Avengers, Thor: The Dark World, Captain America: The Winter Soldier, and Avengers: Age of Ultron.
I’ve heard the quick quote by Danny Elfman in the Avengers AoU track, "New Avengers – Avengers: Age of Ultron". My question is, where in the other movies’ soundtracks was the theme used? I’ve heard it was used in the first Avengers movie, but I haven’t heard that film score in its entirety. Instead of listening to 6 hours of material to find a couple minutes of a theme, I’d like if anyone familiar with the scores could just tell me where and when the theme appears on the official soundtracks. This is part of my broader attempt to find some musical consistency within the MCU, few and far between it may be.
On a similar note, if anyone could tell me when other themes appear in the Marvel films… that’d be great. Lol.. Again it saves me the time of listening and some of the themes’ subtle influence might be lost on me. Themes like Tyler’s Thor theme and Silvestri’s Cap theme aren’t really as hummable or motif-able as say, Tyler’s Iron Man or Silvestri’s Avengers. I’ve heard different score reviewers say Thor is mentioned in Tyler’s work for Age of Ultron, but so far listening I only hear Iron Man. Nonetheless, if you can pinpoint usages of:
Iron Man Theme in Age of Ultron, or any other MCU films other than Iron Man 3
Thor Theme in Thor: The Dark World or Age of Ultron
Captain America Theme in Captain America: The First Avenger, The Avengers, or any other MCU films
The Avengers Theme in The Avengers, or Brian’s work in Age of Ultron (because Elfman’s statements are so bold and obvious)

Also, I’d be interested to know if Brian wrote any additional character motifs for Age of Ultron. Ultron’s theme appears more than once in the soundtrack, if I remember right.