My opinion is St Joesph ascended into heaven. Enoch and Elias aren’t dead so they are somewhere on earth (some say the Garden of Eden) to await the End Times.
St John the Apostle is also not dead (his body is not in the tomb at Ephesus). The apparition at Knock shows St John in Bishop’s attire and preaching, while holding an open book (probably the apocalypse). So he will also come back in the End Times. And he may also be in Eden.