I'm currently setting up a Shadowrun game using Cities Without Number and remembered this resource back on OGMW. I'm reposting here for it's continued usage.
Disclaimer: I did not make this post or come up with these ideas. The post I'm copying from was made by @Ruben who in turn borrowed from @Miss.
Original Post
This categorization was originally created by the Myth-Weavers user Miss. I've found it useful to discussing the system, so I'm posting it here without images to serve as a permanent link. - Ruben