Top 10 Linebackers in Steelers History

You guys are the experts here. I'm just a Browns fan, living in the Steel City. Obviously I'm force fed much Steelers news living here.
I don't despise the Steelers at all. My wife is a Steeler fan.
Most of my friends are Steeler fans, and we talk football often.
I posed this question to my buddy and our lists came up with some differences.
So I'm asking you guys ( and gals!) to give your top ten list
My main question is on three guys, but I would like to see you entire top ten lists.
Does your list include Joey Porter, Gregg Lloyd and Levon Kirkland?