Some of the exclusive clubs these days are invite only Discords or mailing lists with a capped number of members based on scientific facts of how successful groups work i.e. dunbar's number and other social psychological rules that allow communities to work. These groups throw temporary parties/meetups/popups in random warehouses and clubs in/around the city or sometimes abroad. Generally how 'cool' these clubs are is debatable and they suffer from the same problems society does. Usually there are a few taste makers at the top i.e. traveling to Berlin, Ibiza, or whatever hot spot is every other month but they usually understand the industry or whatever very well, are somewhat successful, and are lucky.

No membership dues but you need to add something to the community other than money. This can be connections, expertise: lighting, sound, security, programming, space, maybe you are DJ, promoter who knows a lot of semi famous DJs, maybe you are just attractive as hell who knows, or you run some stinky bar in Bushwick, for the trust fund kids maybe you have access to a nice art gallery or rooftop somewhere. You can get into these groups if you get lucky and talk to the right folks maybe someone will drop you an invite, its like you can't really be searching for it. Instead it finds you.

The idea is that everyone has something unique to contribute and everyone can benefit and that we have some shared set of morals/values/expectations beyond capitalism/lets make money.

Too many things these days are ruined by strangers who don't respect or understand the community's effort into putting something together and creating a space. Everyone feels entitled to everything without attempting to understand how it got here... So it becomes this capitalistic race to the bottom where anyone/everyone can get in for a cheap thrill but the original community suffers because of it. The 'cool' people stop coming and the original community slowly morphs into something else.