I figure it might have to do with something beyond model a, that I haven't read about (thinking types, dichotomies, or something)
Like to explain:
ENTj
ESFj
ENFp
INFp
INTp
ENFj
ISFp (?)
ESTp (?)
Don't like to explain:
ISFj
ESFp
ENTp
ESTj (?)
Don't care and will do it:
INFj
ISTp
ISTj
INTj