If I were to think in categories, I'd qualify as having been in several In cliques over my time, some IRL and others being part of online communities (like say the Old Guard for some forum communities, etc.), but I actively make the effort in trying not to think in terms of categories. It makes you lose the sense for individuals in favour for socialities and can screw with perceptions, like say liking someone based on their social standing even though they're horrible human beings, or for the polar opposite, looking down on others because they aren't as socially privileged.
This sort of behaviour is harmful, yet ubiquitous (just look at schools and their internal society's pecking orders, people practically grovel at the feet of popular upperclassmen to be part of the cool kids and others are essentially alienated and bullied because they don't).
Not saying that grouping up with people is bad, sharing common interests is a great thing and being together with likeminded people is wonderful, but many people are too much into the whole thing and subconsciously (or even worse, consciously with active effort) seggregate people into unfavourable categories to distuinguish themselves from others.