Thank you for this post.
I have also started doing research on psychopathy and narcissism over the last couple of months.
I found the list helpful.
I want to add that according to one of the most prominent theories about Psychopathy by Robert Hare, narcissism is only one of many traits of psychopathy.
The full list of these traits aka Hare Checklist, is on Wikipedia:https://en.wikipedia.org/wiki/Psychopathy