Pure [during beta] (Basher, sk, zyphen, oli, niner, a few others I'm forgetting)
Pure [CEVO-P] (Basher, jmitchell, andres, bobino, someone else I'm forgetting)
Pandemic/compLexity [2008/2009] (Reptile, oPlaiD, sycknesS, REP, alexwut, hubris, newby, dummy)
MoB Gaming (justin, bLackstar, Technasty, and I wanna say the other two were bman and Nightmare but I can't be sure)
Pandemic [2009/2010] (justin, TLR, kermit, fanom, wonderwall, shade)
Blight.fanom (justin, TLR, Orzo, Ruwin, wonderwall, saber07)
compLexity (justin, TLR, carnage, relic, enigma)
blight / Makes Sense (justin, sweater, ryanr, oPlaiD, wonderwall)
TBA [I think that's the name] (paladin, phelon, dummy, davis, wicked, a few others I think)
Area 51 [Season 9] (ryanr, blaze, ender, MemphisVon, soup)
Area 51 [Season 10] (justin, ender, MemphisVon, soup, carnage)
Fully Torqued [Season 13] (justin, A Seagull, seanbud, zbryan, pure)
There are technically a few more teams but I'm only counting when it was for a full tournament or season.