- Karen L King
- Mark Allen
- Emma Callery
- W.E. Butler
- Karl Jaspers
- Robert Skutch
- Glen Grant
- Nathan M. Crystal
- Harry G. Prince
- Charles L. Knapp
- Robert E. Scott
- Mark Forstater
- Allan Hardman
- Samael Aun Weor
- William N. Armstrong
- Rogier Fentener van Vlissingen
- Arnold Michael
- Howard N. Meyer
- Clyde Holler
- Spencer Lewis