The victory lap movies tend to fall into your categorization at least (Avengers, Civil War, maybe Thor 3).
I could go on, but hopefully I’ve made my point!
Which is what made this show so special. Wolverine probably spent more time dealing with the death of Morph in this Saturday morning cartoon than characters in the MCU spend dealing with the death of their twin in PG-13 movies.
* https://www.youtube.com/watch?v=0zPEtyAsM94 * https://www.youtube.com/watch?v=UaNWFHLy2NI
Iron Man was definitely fresh and new when it came out. But a lot of MCU movies have been more of the same. A lot of villains are simply evil counter-parts to the hero (the exceptions are basically Thor / Loki... Guardians of the Galaxy, and Spiderman).
I still enjoy MCU movies, and have watched most of them. But the formula is becoming stale and old for sure.