>>14296421Oxbridge are pretty much the oldest and arguably perhaps even the most famous universities in the world. (MIT/Harvard/Stanford or whatever might compete for the latter title, but only relatively recently, as in in the last few centuries.) Not only that, but they were the only universities in Britain until many centuries later, and in the meantime they grew into literal towns.
Other than that you got University of London's sub-unis (Imperial, UCL, arguably perhaps King's College), Edinburgh, I think St. Andrew's too? They're all inarguably second-rate behind Oxbridge. The "Oxbridge rejects" tier.
And then you have everything else.
That having been said, isn't US academia equally dominated by the Ivy League and maybe one or two others like MIT? That's like 8 or 9 universities, but obviously it's gonna be more because the US is just that much bigger.