Someone on YouTube posted this, in which he claims that Mint is the #1 distro, according to DistroWatch, which only counts page hits.
This page, which counts actual downloads of each distro, tells a different tale:
Ubuntu is #1 with 38,129 downloads. Mint is #13 with a mere 2,276.
In other words, Mint, which I have found annoying in its update policy and a bunch of other little problems, is not at all the #1 distro. I was very grateful when they introduced MATE, but soon went back to using Ubuntu and installing MATE from the PPA. Bye-bye Mint.
Now, with Ubuntu MATE, I have what I consider, after 10 years of using Linux, the best, hands down, distro out there.