Well, I am hesitant to post about this because people will think I'm a homer, but I'd like to point out that Jack Lambert could do all of those things you mentioned quite well. He was the emotional leader of the Steel Curtain defense, he rushed the passer very well, and he was good in coverage (although that's one area Ray I think is a bit better). I don't know about Dick Butkus as much because I didn't get to see as much footage of him, but he simply played in a different era where MLBs weren't expected to do the things they are now. I think another player that needs to be in this discussion is Brian Urlacher, because he's kind of been Ray Lewis' NFC counterpart for many many years (they're only a couple years apart, right?). Urlacher excels in every category as well, and is a worthy present-day comparison to Ray Lewis.