Any idea to what I'm referring to? Any suggestions on where to find these community? Any kind of input are greatly appreciated!
At least you have to describe what kind of crypto community it is or some hints that you can still remember about them, without that it will impossible for the people here to find out the community you are talking about since there are lots of crypto community on telegram.
you may drop your Telegram name here if someone recognize they can tell you.
For what? To get some scam/spam messages from strangers? If someone knows that community then just post it here, that's enough I guess.