After listening to a documentary about him, some PBS kind of deal,
I don't see him as being alpha or valuing. Clearly weak Se. I see more gamma values than alpha, in that his work ethic and sense of duty is more driven by gamma values. I could see his dual being more SEE than ESE; it spoke about how John Adams was someone who took to him and respected his conciseness, and there was a balance between Adam's illustriousness and Jefferson's carefulness.
Hearing about him reminds me more of ILIs than of LIIs, LIIs are more 'jolly' and like to laugh more (Fe dual seeking). I don't see that in Jefferson.