It would be interesting to see what their application/success ratio demographics are like.
1. http://www.bayareacensus.ca.gov/bayarea.htm 2. https://www.wired.com/story/googles-employee-diversity-numbe...
How many of them hold relevant degrees for job openings at Google?
There's even a sourced 2018 article about current hiring practices trending away from degree requirements for you to peruse:
https://www.cnbc.com/2018/08/16/15-companies-that-no-longer-...
It's not about the degrees (relevant or otherwise).
Of course the most important thing is: out of minority applicants who are qualified, what percent are hired? Because we may expect a smaller proportion to be qualified due to systematic barriers that they face. Google is not necessarily in a position to fix those.
I'm willing to bet that Google's demographics hew pretty closely to CS graduate demographics. You need to look farther upstream.
Which seems reflective of the underlying pool of applicants.