sect to mean a group that has broken away from an established religion
That is what you did WT when you broke off from the adventists...
They neither follow a human nor isolate themselves from the rest of society
Not in a commune but they separate from everyone else socially. How isolated is the witness kid who has to go to the library or out in the hallway every time there is a birthday or holiday activity? How many times is it pounded in to their heads that "worldly association" is bad and they can only have friends "in the truth" Even then, they have set up a tattle tale community where dissenters and sinners are blackballed either officially or by marking.