Explorers of the "Afterlife" through OBE

[Ninshub]

There are a lot of classic OBE/astral travel books out there. Some are more how-to books or guides, some share journeys and "mapping" the other dimensions. I'm trying to gather a list of those who provide the latter.

So far I have these names:
Robert Monroe
Jurgen Ziewe
William Bulhman
Kurt Leland
Rosalind McKnight
Bruce Moen

Are there any others?

Robert Bruce, Graham Nicholls, Luis Minero have written more on the former topic, I think. Can anyone point out to me if I'm wrong here?

Has Tom Campbell's theorizing involved OBE journeying of his own?

Also, if anyone has explored these authors, have you found them largely to be compatible, or not? Any thoughts welcome.