I go to 3 different meetings at 3 different churches.
There are so many people with so much clean time, they do tend to gravitate towards each other. Think of the things they have shared and learned about each other over the years!
I have always felt welcome at every single meeting, even my first one.
It's never occurred to me to think of those that know each other for many years, are part of a clique. I think we are all part of a program to keep us sober.
Tons of strength in that concept.
Are you sharing at meetings? Have others introduced themselves?
Have you gotten numbers?
Try a different place, try 2 or even 3.
If you get the feeling people are cliquish in all those places, it might be you and not them.
In your first post you mentioned something about this being a familiar thing with you and why you drank. Can you elaborate on this?
Keep going to the meetings and I guarantee you will get to know these people.
That is what AA is about
Good luck to you