and right now I feel a bit lost because there’s no box I can say I belong to and no place where I feel completely at home.
From a certain perspective it is advantageous to not belong to any group because you will feel more comfortable with other groups than had you belonged to a different group. E.g. if A is yeshivish, B is modern, and C is neither, C will feel more comfortable than B will among yeshivish people, and C will feel more comfortable than A will among modern people. But actually, that wouldn’t really be a function of being groupless inasmuch as it would be a function of being in between two other groups. So the best bet would probably be to create a group for the groupless. Or to quote David (as in David and Goliath?) “Friends of the friendless seize the day”.