Yes, I think you’ve gone at this the right way, looking at wins. If we look at nominations, a statistician would immediately begin asking questions about the underlying pool of eligible songwriters and musicians. For example, if one of those populations skews male, say, in the 60s, then we would probably expect more nominations of men, right? And that would be an industry question, not a Grammy question.
That’s my logical take. My unlogical take includes questions about the larger meaning of the Grammys and the many anomalies. For example, Bob Dylan didn’t win his first solo Grammy until 1980. This is the guy the Beatles referred to as The Man, who has 8 albums and songs from the 60s and 70s that are in the Grammy Hall of Fame. He didn’t win a Grammy for any of those?
And was the P.O. awesome in 1957 or what? Who sends a letter to somebody in NYC without a street address?