Here is the ending of Mark that is "not" in dispute and has "not" been claimed by some to be added:
Not in dispute? DOC, it's disputed
by the other gospels! The account you give here has Mary Magdalene and Mary the mother Of James and Salome -- very specifically those three -- coming to the tomb. They arrive and find that the stone's been rolled away from the opening, and there's a young man -- ONE young MAN -- sitting inside. And the women were so afraid, they
didn't tell anyone about it.
Matthew disputes this in every detail. Matthew says it wasn't those three -- Mary Magdalene, yes, but with her was only "the other Mary". They came to the tomb and there was an earthquake (no other evangelist, and no historical source, mentions an earthquake). And it wasn't a man at all, it was an angel: and he wasn't
inside the tomb, he was sitting
outside on top of the stone. And far from being afraid to speak about it, the Marys went out and told their friends as soon as they could
No no no no no, says Luke, you're both wrong. There were a whole group: Mary Magdalene and Mary the mother of James -- Mark was right on that -- but also Joanna and some others. And there wasn't an angel -- there were TWO men, not one, INSIDE the tomb, not outside. And they weren't sitting, they were standing up. Luke disagrees with Mark, though, about whether the women told what had happened.
Then there's John, who doesn't agree with anybody on anything except the presence of Mary Magdalene. His version is that she came
by herself and saw the stone rolled away and went and told Peter and someone else. After they'd checked out the scene and gone away,
then Mary Magdalene saw two angels -- TWO, not one, and ANGELS, not men -- sitting inside the tomb (not outside, not standing up, and not on top the stone).
Of course, then she stumbled away and managed to look straight at Jesus and think he was the gardener ...