Earlier quoted context omitted.
Ketamine is not generally considered a psychedelic. It's a disassociative. I don't think I've ever seen a study comparing this in the way you describe, but from piecing together other papers I recall seeing I would say probably psiloc(yb)in, possibly DMT ("ayahuasca"), with LSD and mescaline (peyote/san pedro) being qualitatively similar. All of these are primarily serotonergic. I'd be surprised if Salvia does jack s…
>> Ketamine is not generally considered a psychedelic. It's a disassociative. Yeah, I don't think people who say that have done a high enough dosage. :P
subjectively, I find psychedelics to have more of an "organic" feel and dissociatives to have a more "synthetic" feel, although I imagine others might describe it differently.