Not to take away from your point about psilocybin but the mushroom brought up, lions mane, is not hallucinogenic.

For sure, and lions mane is one of the three things Paul Stamets has been talking about for years to take in combination with niacin and psilocybin (microdose) to support neurogenesis. Low doses of psilocybin have only very mild perceptual changes, much less than smoking weed or drinking alcohol (for me).