Ludacris, OutKast, Goodie Mob and Scarface are the only guys on that list who can fuck with dudes in NYC on a lyrical level.
Lil Wayne, T.I., Chamillionaire, and UGK are all average MCs.
Slim Thug, Trick Daddy, Young Buck (his delivery is tyte though), and Lil Flip are all below average.
Lil Scrappy, Young Jeezy, Paul Wall, and Mike Jones are pure garbage.
I haven't heard anything from Da Backwudz, DJ Smallz (I think I've heard this name though somewhere), DJ Drama, DJ Rapid Ric, or DJ OG Ron C.
For all those MCs average and above, there are 10 more from NYC that are better than them. Sorry to say, but people who listen to alotta mainstream music just tend to be slower than people who search for music on their own rather than let a DJ who's being paid off by record companies choose what they listen to.