In Thor: Ragnarok Bruce Banner says that he holds 7 Ph.Ds.
What are the streams or fields in which Dr. Banner holds these degrees?
Basically, what are his qualifications in the MCU?
As I explained in my answer to a similar question, we don't know precisely what 7 doctorates Banner holds. However, based on comments from colleagues, friends, and those who have hired him, we know he's at least an expert in the following fields:
He taught classes at Culver university in the first two, I believe, which means he would need a doctorate in those to qualify.
He's also generally regarded as "one of the smartest people alive", which in the Marvel continuity is a rather well-defined list of people (Tony Stark, Bruce Banner, Victor Von Doom, Reed Richards being the big 4 from the comics).