> I don't think I've ever seen a team that's 80% white
I assure you this is very common in the industry, at least in the US. I can even go further: that 80% white team will usually also not have any women. 80% white men on a team describes most of the teams I've worked on over the decades.
How many women were doing Comp Sci in your year at uni? Mine had 6 out of 110. And they mostly hated it and don't work in IT now the ones I know about.
At my university it looks like the CS program is currently just shy of 40% women. This is higher than it was when I went. But the degree is a red herring.
Most of the engineering teams I have worked with have had members who did not have CS degrees. In fact, it's unusual in my experience for e.g. project managers, QA, or design to have CS degrees. Most performing engineering organizations include people who did not study computer science at a university, and that is a good thing.
Quite a number of good engineers do not have CS degrees. Whether or not a person studied CS at age 20 has almost no bearing on their capability to excel at engineering at age 30. Checking degrees is not a useful gauge in the field, and doing so often makes one appear snobbish.
I assure you this is very common in the industry, at least in the US. I can even go further: that 80% white team will usually also not have any women. 80% white men on a team describes most of the teams I've worked on over the decades.