While associating the Baltimore Ravens with Hawkeye was kind of a given because of the purple motif shared by the two entities, it’s rather ironic that the purple getup famous worn by the noted Avengers archer in the comic books isn’t seen at all in the films in the MCU. In fact, throughout the movies, you only see SHIELD Agent Clint Barton in all-black getups.
One interesting fact that most people don’t realize: throughout the MCU, the only mention of the name “Hawkeye” comes once when it was teased in the original “Avengers” film, and fully stated in Endgame (a moniker which Barton uses for his archery-loving daughter).
Buffalo — Rhino
The Bison — the animal which the mascot of the Buffalo Bills is derived — is a member of the bovine family. Meanwhile, the rhinoceros is actually a mammal. So, there’s not a lot of common, outside of the fact that both of them have horns of some kind. Apparently, that’s just good enough for a substitute in this case.
In the comic book world, Rhino is a gamma radiation-enhanced Russian villain who was a member of the Sinister Six, and thus beefed with Spider-Man.