You forgot Spandam:
His Spine is broken. He's dead. Until Oda says otherwise, He is dead.
Mrs. Monday and Mr. 9 haven't been shown again despite a Mini-arc for Baroque Works, so it's a good sign they're dead. Mr. 11 is dead for a fact. Ms. Fathersday and Mr. 7 are dead. All of God's priests except for Gedatsu are dead (Especially Yama, see above link). Butchie and Siam (Siam, at least, who didn't get back up after Zoro slashed him) are dead, And Bellamy (Until Oda shows us otherwise) is dead.
Of all the CP9, only Calipha, Bleuno (Because the building he was on was got blown up), and probably Kumadori are dead. Calipha got hit by high amperage, high wattage electricity. Enel's electricity attacks were high voltage, low amperage, meaning it wouldn't necessarily kill the victim. Think static shock. Ever touch a doorknob and it stings? That doesn't actually hurt you because the amperage is VERY low.
Lucci's probably gonna come back and if he's not stopped, attempt to persue the Strawhats. Kaku was slashed up good, but nothing lethal. And Fukuro got smashed into the ground, but if he can take kicks from EACH CP9 member without being hurt, then he has impressive stamina.
Edit: Aldrich, you're referring to Mr. 13? No, he just kicked him against the wall. The neck breaking was anime filler.
And Mrs. Friday he just kicked her head against the wall: