Karen: ESFJ-Karen is probably the most difficult to type.
Vince: XSFJ (definitely an SJ...could be ISTJ, although I'm not sure a gay ISTJ would enjoy making candles and lotion or trying on gloves)
Bobbi Adler: ESFP
Martin Adler: ISTP
Marilyn Truman: Depressed most episodes so not sure, probably an FJ.
George Truman: Due to his job and his relationship with Will, XNTP