Moralistic Narcissism
So somatic narcissism and cerebral narcissism are established categories, but consider: one way to get self-esteem supply is to be More Moral. I think this is a useful category of narcissism which is very under-recognized.
Narcissism is largely support beams for injured self-esteem. Something you can always lean on to feel good about yourself no matter how much the world hits you with hurtful judgment, shame, embarrassment, ostracism, and so on. Something that lets you reliably do ego-saving or face-saving redirects like "whatever, I'm still better", ideally while adding "in every way that matters".
Somatic narcissism does that by taking pride in bodily or physical things. Cerebral narcissism does that by taking pride in mental things. Moralistic narcissism does that by taking pride in things highly esteemed as moral - honesty, religious piety, altruism, being virtuous, unmasking bad people, persecuting evil, and so on.
I think a whole lot of narcissism goes unnoticed because it looks like moral righteousness, zeal, or extremism aligned with widely held values.