I nominate Picard: 15 "deaths".
"Lonely Among Us": Picard exists for a period of time only as some sort of energy field out in space. He eventually gets saved by the power of terrible sci-fi. I file this under "temporary death", even though his consciousness still seemed to exist...somewhere out there.
"Samaritan Snare": Although not terribly explicit, some of the dialogue suggests that Picard may have been briefly, clinically dead on the operating table before being stabilized, and the ultimately saved by Pulaski.
"Time Squared": Picard kills another Picard.
"The Best of Both Worlds": Picard is declared a "casualty of war" by Admiral Hanson. He was not dead, but considered good as dead.
"Cause and Effect": Everyone on board dies (then it gets undone in a time loop).
"The Inner Light": Picard dies of old age in the alternate life that the probe gives him. As he dies, he wakes up on the bridge of the Enterprise.
"Tapestry": He dies on the operating table, and then comes back, possibly due to intenvention from Q.
"Chain of Command": Presumed dead after being captured by the Cardassians.
"Remember Me": Crusher is trapped in a static warp bubble and everyone else around her slowly disappears. Picard is one of the last to cease existing before we really know what is going on.
"Frame of Mind": Riker shoots himself and kills his imagined Picard in the process.
"Parallels": Picard is dead in various alternate timelines. The deaths are not shown on-screen, but that seems to be okay by the guidelines of the question. Also by the guidelines, this gets counted as one death (no matter how many timelines he dies in).
"Gambit": Picard is declared dead after he is "killed" by a transporter weapon.
"All Good Things": Two Enterprises blow up, presumably ending two Picards. Will count these as one death.
Generations : Picard looks to have died on Veridian III (due to explosion of the Veridian star) just as Kirk seemed to have died aboard the Enterprise-B. In actuality, Picard was saved by the Nexus (just as Kirk was), and we find this out a few moments later.
Nemesis : Picard's clone dies.
Some of these are fringe cases, but do fall into the death "types" listed by the OP in the question.