While there is plenty of speculation on the types of narcissist out there, the bulk of research suggests that there are two main variations. The first, grandiose narcissism or overt narcissism, is defined as when a person has a superior image of themselves, and has a desire to maintain that image, gain admiration and attention from others, and demonstrate a sense of dominance or power.
The second, known as vulnerable or covert narcissism, is categorized by fragile self-confidence, of which an inflated self-image is often a coping mechanism for low self-esteem.
Both types of individuals can be extremely exploitative, employing often subtle but coercive methods to put others down.