I am sorry if this thread is giving off the wrong tone.
I will tell you why it gives off the “wrong tone”. If you were merely interested in having friends and acquaintances who are similar to you, that would be one thing, but why should it bother you if there are plenty of “them” around? Why should meeting “them” in supermarkets and restaurants disturb you? You can still daven in a “Litvishe” shul if you want.
And the line “do you feel like they are all around you, or taking over” makes the disclaimer which follows ring hollow.