I'm in the ex-messenger now bikeshop-proprietor-in-wine-country tribe. My tribe commutes in lycra or street clothes depending on the weather and mood; on a cx bike, or a mtb,or a roadie, or a ex-mtb now battered commuter, depending on the weather, time constraints, my mood and which bike needs to go to work to get something done to it; trains on a road bike, cx bike or mtb; races road and occasionally xc-mtb; mucks around on an mtb or cx bike; goes for jaunts with friends on a roadie; logs up heaps of hours towing an infant trailer or with a co-pilot in a small seat above the top tube; but doesn't own a fixie because 15% kickers abound around here and there's no velodromes in the region.
If I could find the time I'd also go cycle-touring/ bike camping...
Cliques and stereotypes are for folk who want an excuse for not trying new things.