Mom: IxFJ most likely, she seems to think and act sort of like Ivy, and other descriptions kind of fit.
Brother: ISTP seems most likely. He's taken 5 tests, got 1 INTP, 1 ISTP, 1 ISFP, and 2 ISTJ's, so I just took the middle one. He's quite hard to stick a type onto.)
Me: INTx. I've gotten both INTP and INTJ about equally, and descriptions of both often agree quite well.
Dad: ESTJ. He was not tested, but has all the qualities of an ESTJ quite obviously.
Dad's current wife: ESFJ. Another person who hasn't been tested, but has all the obvious qualities of an ESFJ.
I don't see other family members often enough to really put a type on them, as none of them have obvious qualities that I can latch onto.