I think it's a real shame that a lot of the natural entheogens like Morning Glory seeds and Amanita muscaria have been omitted from the list

Morning Glory and Rivea were viewed by some shamans as THE most important psychedelics other than Psilocybe, Peyote and Salvia divinorum. And, yet, I see tons of synthetic psychedelics (some of which are shallow and hedonistic) cluttering the list.
I think our society could make far more social progress using natural psychedelics than the synthetics. Look how much the ancients learned from these plants. Where would our civilization be today if Mescaline sources, DMT sources, Psilocybin sources, LSA sources, Amanita muscaria, and Ibogaine sources had never grown on this planet and learned to be used sacramentally?
I think it's a damn shame the staple psychedelics of the 60's hippy revolution were synthetics like LSD rather than stuff like Peyote, Psilocybe and MG/HBW/Rivea and Salvia divinorum. Oh well...
I don't expect mainstream societies will ever as a whole find the healthiest most mindexpanding psychedelics to use. Instead, hedonistic carefree synthetic psychedelics like the MDxx's (not that there's anything wrong with rolling- it has its time and place) will reign supreme forever, while the more serious, overwhelming psychedelics will always be a lot more underground.