Summary...
Season six, flash-sideways was purgatory.
The island was real.
To recap:
Oceanic 815 really happened.
Jack - died on the island.
John - dead, killed by Ben
Sayid - dead, originally killed by Roger Linus, then resurrected. Then killed again when he took the bomb away in the sub.
Juliet -dead, killed the explosion of Jughead.
Kate - dead, escaped the island. Died sometime later.
Desmond - dead, presumably on the island after being pulled up by Ben & Hurley.
Sun & Jin - both dead. Died in submarine explosion, drowning.
Sawyer - dead, escaped the island. Died sometime later.
Hurley - dead, took over Jacob responsibilities. Death time/circumstance unknown.
Ben - dead, accepting Hurley's offer as assistant. Found redemption, but stayed in "purgatory" to work out his issues.
Claire - dead, escaped the island. death circumstances unknown.
Michael, - Dead, killed on the freighter explosion. Michael is still on the island...not close to "finding his way" to let go and move on.
Walt - escaped the island. Presumably dead, not needing to find the rest of the 815 crew.
Rose & Bernard - dead, presumably on the island (hopefully of natural causes) some time in the undetermined future.
Charlie, Libby, Boone, & Shannon - Dead. Killed on the island, reunited in purgatory.
Ana, Charlotte, Daniel - dead. Killed on the island. Not ready to move on.
Miles - dead, escaped the island. Not ready to move on.
Richard - Still alive?
