Neale Donald Walsch
Conversations with God author calibrated as a spiritual teacher
Spirituality
Proof of Heaven, by Eben Alexander
A Neurosurgeon's Near-Death Experience and Journey Into the Afterlife, by Eben Alexander
Sharon Salzberg
Author and teacher of Buddhist principles calibrated as a spiritual teacher.
Jack Kornfield
Author and Buddhist practitioner calibrated as a spiritual teacher.
Walter Russell
American artist and author, 1871-1963.
Mother Meera
"believed by her devotees to be an embodiment (Avatar) of the Divine Mother (Shakti or Devi)." wikipedia
Joe Vitale
Best known for his appearance in The Secret. Calibration of LoC.
Tenzin Wangyal Rinpoche
Calibrated as a spiritual teacher