There are two main NPD types: Grandiose (overt) narcissism and vulnerable (covert) narcissism. While grandiose narcissism is often characterized by exaggerated self-worth and a need for admiration, people with vulnerable narcissism instead experience feelings of self-consciousness and insecurity.
There are also several other subtypes, including antagonistic narcissism, which is characterized by aggressiveness and feelings of entitlement, and communal narcissism, a type in which people tend to seek admiration for being altruistic or benevolent.