>They used to dominate, now many people look at them as jokes.
Many people also use them every day and love them. I'm one of them.
Old Gnome and new Gnome are very different. The old Gnome is now Mate. Also Cinnamon from Linux Mint has captured a large portion of the user base. There is Unity that comes by default with Ubuntu and many people(like me) are too lazy to switch. And finally, there is up and coming Pantheon from elementary OS.
It's largely fragmented I guess...
I seriously prefer Unity over both of them in their current incarnations and that's something I never thought I would have said when Unity first came out.