Is that true the majority of LGBT groups are formed by effeminate gays and manly s?

well I am not sure but neither I am against effeminate gays or butch s but I have seen some videos of youtube of LGBT groups and they show only gays who are effeminate and s who are manly and some bi girls but never a masculine guy who is not effeminate.. he looks or acts very straight but he is gay.. I have never seen them on those videos are those groups conformed by members like that? so there is no diversity? many people as well trannuals they say don't belong to the category of gay people why is that? I am alone in this road as far as I know.. I never want to know a gay who is effeminate because I don't like them..as well I was watched a video of a gay school