A little like that, but not sure of those exact categories. Here is how it was last year with the Freebies:
The Freebies - GameOgre.com's Free Online Game Awards
The large categories would be someling like this:
Online Shooters
MUDs
Online Strategy Games
MMORPGs
Online RPGs
Virtual Worlds
Online Sports Games
However, most of those categories can be broken down into sub-catehgories.