I have a similar curiosity and on all the psychopath tests I've ever taken (which obviously are not "approved" ones as they're just whatever is available on the internet/psychology sites), I've always scored in the top 1% for psychopathic traits.
However (and it's a big however), I score very low for impulsivity. So I might have all sorts of thoughts about things, but I'm absolutely not going to act on them.
Also, while I don't "feel" empathy, I do "think" empathy - as in, I can imagine, dispassionately, how someone might be feeling in a situation, and as I do have a moral compass and strong ethics, I choose not to do the things I sometimes think about, or things that could be harmful to someone else, because they're not aligned with the person I want to be.
I'm very low anxiety, don't feel guilt/shame (but this is also because I don't act on ways that are contrary to my values, so I don't set much store by that) good at my job, largely unencumbered by negative emotions, and very very calm/good in a crisis. And I have lots of very good friends, great working relationships with my team and colleagues (evidenced by good scores in appraisals and peer & 360 degree feedback) and have never had a problem with partners/long term relationships, so I don't think it's a hindrance or affects my life much.
I have had to teach myself not to go for the killer lines when having a disagreement with someone though.... Mantra of "the argument is not worth winning at the cost of the friendship".
Similar to something mentioned by PP, I also have a number of autistic traits (commented on over a lifetime by multiple others, some of whom are qualified to make such diagnoses) although I've been masking them for so long (as I always felt very different to the emotion-driven way that everyone else seems to operate), that I have no idea whether I actually am or not, and whether these traits are more driven by possible autism, psychopathy, the interaction of the two, or something entirely different.
And for the avoidance of doubt, I am making no claims whatsoever about other people with autistic traits or diagnoses - I believe the phrase is "if you've met one autistic person, you've met one autistic person"...