I think NPDs are toxic, at least as long as they are not self-aware and haven't had treatment. They abuse and exploit others and they are out of touch with reality.
Narcissists have rages when triggered. I think of that as a hallmark of NPD. I like this description of what triggers NPD rage:
The anger of narcissists, on the other hand, can be more demeaning. Their criticism evolves from their conviction that others don't meet their lofty standards--or worse, aren't letting them get their own way. "Narcissistic injuries," or wounds to the ego, often pave the way for narcissistic rages, which can be passive-aggressive or planned out, as well as sudden. They are above you and you have displeased them and probably deserve punishment they will dole out.
from Psychology Today.
Schizoids may see themselves as "above" others, but I don't think of schizoids as having rages when thwarted.