Top o’ my list, extreme, oblivious narcissists that just do whatever they want with no regard to others feelings, desires, or needs.
These are the people that never ASK about you, or ASK what you think, want or need.
Second to this, and often a double whammy of dysfunction, is the passive aggressive, which is usually the quiet narcissist to boot, but no less deadly, just sneakier.
Last but not least, the chronic whiners and complainers, that always fault find and never acknowledge the positives. Grievances looking for a cause, of which they always find.
They are the Bloodhounds of negativity. Can sniff out one particle of shit in a thousand acres of roses. lol
Of course, the usual, liars, cheaters etc, goes without saying. lol