Atypical.
Love your posts!
You are so just RIGHT

'One other difference I've noticed between narcissists and psychopaths is that narcissists have way more of a capacity to feel negative emotions, especially fear.'

True narcs do feel fear, and they tend be very emotional, such sensitive little flowers. That 'sensitivity' is a one way street tho, they treat you like s##t while expecting, hey, insisting you treat them with kid gloves/like a God.
Its all about THEM. You are unspecial and of scant importance.

Psychopaths do not feel fear.
My ex partner (a high functioning psychopath) had no fear at all, none. No conscience, no empathy and no fear.
In the last few months of our relationship, I, being of a curious mind and realizing what he was began to observe him closely, like you would a bug under a microscope.

I found myself intrigued, how did he understand others without empathy?

I noted he watched people, secretly, covertly, listened intently while pretending not too. He was an expert in body language.
It was a game to him, learn about someone, be their friend, gain their trust, find out secrets, their weak points and then. Go in for the kill!

He told me. 'Anna, you must learn to play people, if you don't you lose'

Its all a game.

I wish I'd met him earlier in my life, I was such a dappy sap. I learnt so much from him.
The weight of his personality however was overwhelming, crushing he was always right his voice had to be heard. I was becoming more and more invisible so I had to go.

He was a bit of a genius, yes he was. So clever, and unfortunately also evil.

I suspect from your posts you are one of the few people who could take on a narc and win.