I have no reason to believe any of these stories. However, I do believe that Lazarus was dead for 4 days and his spirit went somewhere. I assume it went to paradise, but the bible doesn't say. So there is one true testimony.
Paul also told of a man who went to heaven. Most believe that he was speaking of himself. But he was unable to speak about what he saw.
So I know of two people who really did have afterlife experiences, but they are the only ones that I believe.
They also did not write books or brag about the experiences, some may say, "Paul did", but remember it was a painful experience for him, if indeed he was referring to himself.
Actually, Lazarus was renown throughout the land. So much so that the pharasees desired to kill him that he be shut up. Because of Lazarus's testimony folks believed.
Look at the account: John 12
9 Much people of the Jews therefore knew that he was there: and they came not for Jesus' sake only, but that they might see Lazarus also, whom he had raised from the dead.
10 But the chief priests consulted that they might put Lazarus also to death;
11 Because that by reason of him many of the Jews went away, and believed on Jesus.
10 But the chief priests consulted that they might put Lazarus also to death;
11 Because that by reason of him many of the Jews went away, and believed on Jesus.