> Beyonce has 35 Grammy awards.

Did you look into the reason for this?

I don’t know but it I had to guess I’d say that rock music faced a stigma in the 1960s and 1970s. Basically it was discriminated against.

The musical spectrum is much broader now in terms of what is recognized by the academy.

I don’t think Beyoncé has too many. I think the other groups have too few.

Also, besides the Stones, a lot of those groups were not together for long periods of time during their productive years. Newer acts are around, and more productive, for longer. Both Beyonce and Taylor Swift have been active for 20+ years and regularly releasing new, respected music.

These are my in brain theories with no research.