Thank you for pointing this out, I thought BRK.B had no voting rights. I looked it up and learned that BRK.A shares have 6.66 the voting power of the equivalent dollar amount of BRK.B shares. Specifically, each BRK.A share is 1,500x the economic value of BRK.B but 10,000x the voting power. [1]
It turns out that there are indeed share classes of these companies with no voting rights (GOOG, class C) but I haven't found an example of a company that doesn't have some voting shares in non-insider hands.
It's still shitty that the S&P indices barred SNAP while turning a blind eye to the existing inequities. I'm perfectly okay with them barring new split share listings but at least begin to apply it to others that benefit from the lack of corporate governance.
[1] https://berkshirehathaway.com/compab.pdf#:~:text=Berkshire%2....