You can easily identify a grandiose narcissist (GN) after a while, but a fragile/vulnerable narcissist (VN) goes the extra mile to disguise the false-self because their self-worth is so diminished that even the slightest risk of exposure sets them on a tailspin.
GN’s are less afraid of being seen for what they are than their fragile counterparts. While they’re also lacking in accountability and empathy, are self-entitled, envious, exploitative, arrogant, and preoccupied with seeking admiration, GN’s are less likely to play the blame and shame or hoovering games long-term.