We have that to a certain extent with Nextdoor. They take precautions on invites, neighborhoods you live in, and names. Yet, it's one of the messiest of clusterfucks.
Once one Lead gets in, only they themselves can promote another person to Lead. In my neighborhood, we had one thoughtful Lead, and one insane Lead. The thoughtful lead carefully deliberated about adding more Leads, while the insane Lead picked her cronies - and then eventually "overthrew" the thoughtful Lead.
NextDoor has terrible content moderation and no penalties for infringing users. It's absolutely vile, amplifying the most minority of opinions with no consequences.
No such alternative exists on NextDoor. Don't like the content or moderators? Your only choice is stop participating. I have no idea why NextDoor thinks that is good for their business model. Over time the site will just be populated with Karens.
The cynic in me thinks that Nextdoor is just proof that the fundamental thing that makes social media terrible - being a megaphone for egos, pettiness, and narcism - are not overcome by real identities and scope. In my group, there are people that like to stir the pot, and then there are people that love reacting to the stir.
I'll admit it was awful when I lived in Berkeley, but so were the people around me.
Nextdoor is great; lets me know what the neighbors are doing and helps me pick out great local services. Some dudes above pointed out you need some common interest for it to work: being a good neighbor counts as a common interest!