Depends what you mean by 'influential'. Meanwhile:
Agree that there's the 2004 and the 2005 versions.
2004: Jophiel, Totem, Smasharoo and a tie for 4th between Flea/Moebius and maybe Kaolian.
2005: Jophiel, Bhodisattva, Kaolian (until recently - come back Kao!) and Flea
If we're voting for Post-*****/agitant/joker/sh[i][/i]it-stirrer:
Bhod, Joph, Me, Drac, (and newcomers:) Drac, Youshutup and Nephthys.
At least we're all agreed it ain't Al'Katie