By classic keto, do you mean 3:1, 4:1 ratio ketogenic diets as used in epilepsy? I'm currently aiming close to 3:1.

I have what would probably be diagnosed as something along the lines of schizo-affective bipolar disorder, with a side of social anxiety. More often than not, it's been the social anxiety I've had to deal with, but I've had some periods of serious psychosis, and decades where I had various forms of auditory hallucinations on a regular basis. The hearing voices stuff had already died down, but the voices disappeared entirely when I started eating more ketogenically, although I can't be certain that wasn't just a coincidence. I've noticed lately I'm getting a hint of them when listening to Freebird, but it's worth it.

I do get a mood lift from eating a ketogenic diet, and also a reduction in social anxiety, both in person and online. But it seems to be tied to caffeine, at least, the few times I've tried lowering my caffeine intake or even quitting caffeine, I've ended up down and back in my shell. I still do lower caffeine now and again just to restore sensitivity.