First of all, Edison, I think, almost quite probably ESTJ, with ESTP and ENTJ as second most likely possibilities.
Also, you mentioned that an if Einstein were an ENTP it is possible that his isolation could be due to people not accepting his ideas. But, as a child and teenager, Einstein was very introverted. He did not become gradually isolated over time, like some, such as Howard Hughes or Nikola Tesla. Instead, Einstein was a rather isolated person to begin with.