Dr. Stanislav Grof, Psychiatrist and theorist (psychonaut).
I have recently watched the film https://www.psychedelicassistedtherapysummit.com/thewayofthepsychonaut?kref=2YglctPiB1lF
of which documents Stan Grof's life and career. By the end of the film, it was clear to me, that I had found another basic human archetype of Fear Management System-8, in my integral theory of fear management systems. There have been 'saintly' type figurations I have put in the FMS-8 prior, but now it felt like Grof is a less saintly but authentic type (manifestation) of FMS-8, and a very potent impressive person and life.
For more information on his work you can look him up (e.g., on Wikipedia) but the above film (and book?) "Way of the Psychonaut" is a really good overview.
See Below, my latest simple model of fear management systems (FMSs) that I have been researching and publishing on for probably 15 years or so (e.g., see Fisher, 2010). This diagram shows an evolutionary/developmental arrangement of these FMSs and FMS-8 (Turquoise colored) is depicted (and is extremely rare).
Note: It would take a long post and lecture really to do justice to explain this visual model and the theory it represents.