Plus others that has presumed died , but came back to life or were saved from death.
Havok -presumed died in X-Factor in a plan crash
Cyclops - presumed died during the twelve saga
Angel - presumed died during X-Factopr classic, in a plain crash but was turn into Archangel by Apocalypse
Stacy X - Lost her powers and presumed died in the New warriors in a car explosion, but sunddly cameback repowered
Darwin - presumed died but only merged with Vulcan
Caliban - Died during Messiah Complex
Boom Boom - Was killed by the Lepoer Queen with a single shot in the head, but was saved by X23 who went back on time.
Dazzler - presumed died in the New Excalibur, but she cameback to life unexplained
Revanche - Died with the Legacy Virus
Joseph - presumed died
Ariel -presumed died during Second Coming but was only trapped in Non Time, saved by Rogue and the students
Warlock - presumed died during Extintion Agenda
Blink - presumed died in Generatiuon X