A couple of years ago at the annual Soulforce staff retreat we all took the Myers-Briggs test. (No I'm not actually one staff, just constant a groupie) If I remember correctly
Jake is a: ENTJ
Gary is a: ESFJ
Mel is in an oddity go figure! His I and E are at equal levels as his J and P are also equal. So he is a I/ENFJ/P
This is kinda fussy, but I think Bill is and INFP.
Jamie I'm not sure if you were on staff yet when we took the test.