Yes, all these kinds of groups, IMO, are a lot like HS cliches. Even if they don't enforce political uniformity. Group dynamics is a real thing - and one can even recognize various types or stereotypes of personalities in almost any group. I briefly entertained participating in a local artist's co-op, until I started recognizing some of the types that eventually wear out my politeness/patience.
But there ARE small informal groups around and yes, everyone is friends so getting invited to join might take awhile and some effort. Quilters, crafters - lots of spinners, weavers, knitters etc - make an effort to get together on a regular basis, like monthly to share, problemsolve, etc. Same is true of outdoorsy people - hikers, water sports, rock climbers, cyclists. Forgot - gardeners, too! You can usually meet people like this at art fairs, farmer's markets, or even visiting those co-op store fronts.
