I can be around family and bounce off the walls.
I can home alone and be talking to Eiddy on here and again i am bouncing off her vibes.
I can go days without seeing my family or any other adult interaction. Me and my brother are the same (both E). That is because of how we were brought up though. Free spirits, independence and you want it, you get it was pushed on us as kids.
Every ESFJ and ISFJ are going to behave slightly different although having some shared characteristics as all of us have different life experiences.
And never one to want to be placed into a box ....