Salvia is no serotonergic psychedelic that's sure, but it doesn't do people justice saying Salvia is akin to Ketamine and DXM. Salvia is NOT an NMDA blocker, it doesn't mess with your glutamate ushering in neural toxicity and lasting behavioral consequence... Ketamine and DXM do (at least in some people). That's not to say kappa-opioid agonists aren't vastly underinvestigated and not potentially neurotoxic in their own rights, although my bet is they aren't. Anyway, they're totally different from NMDA antagonists neurochemically.
Behaviorally, you ever see somebody walk on a high dose of Ketamine or even begin to utter something unintelligibly? It wouldn't have been used as a clinical anaesthetic if that was possible, right? Subjectively, I can see how it may dub atypical psychedelic rather than dissociative.
Not that there isn't a certain degree of similarity after all but Salvia just doesn't seem to qualify as a dissociative the way Ketamine, PCP etc do. I believe it ought to be recognized as a substance of its own class of hallucinogens, neither psychedelic nor dissociative. Just my two cents, and by the way I've only ever done Salvia of the said substances, never once a dissociative anaesthetic nor DMT, so that mostly is my speculations anyway.