"Well, maybe not everything, but I will give the authors of the
Wikipedia article, Comparison of Linux Distributions, credit for a
good try. In this article, you'll find multiple tables of more than
50 different Linux distributions.
"Want to know who created Arch Linux? It's in there. Want to
know what version of the Linux kernel the Lycoris Desktop/LX
reached before it was folded into Mandriva? That's there too. Do
you hanker to know what desktop manager PCLinuxOS uses by default?
You can find that there, too..."