Just watched the original Jaws. I was curious about the "big three".

Brody is definitely and SJ. Either ISTJ or ISFJ.
Hooper seems like and ENFP; maybe ENTP
Quint is a tough one. NT or SP? He is a TP for sure. Not sure on the E/I or S/N. ISTP? ESTP? ENTP? INTP? I would lean ISTP....

side characters:
Brody's wife, ISFP
The Mayor, ESTP.