There are several artists who should have multiple albums included but don't because it feels like they tried to include EVERY demographic. Every area, every region, every style, etc - and not only that it seems like they tried to mix up all those demographics throughout the various ranking levels, so if you look at the top 10 you see a cross section of everything, as well as looking at 50-60, etc.

Again, all this stuff is just made for clicks.