When I started with trying to guess which subtype someone belongs, I noticed there is no real general method or rule which always worked.
You would expect the Si subtype of LSE to be more introverted and the Te subtype more extraverted... In all of the cases I see, it's the other way around... Same holds true for ESE.
Producing subtypes would be the ones most trying to make contact with other people (sociable) and the Accepting subtypes would be the ones most busy running their own agenda... Yet if you look at the SLE, than the producing subtype is more introverted busy working, while the accepting is out there making fun for others. Same holds true for SEE.
c) I tried to spot other patterns like hard working, more or less humor etc. But nothing seemed to hold.
So far the only thing that worked for me was reading the subtypes descriptions from medgved.
So if you have noticed a general rule or something else that worked for you... it would be nice to hear it.