Where do validators and miners of various blockchains communicate?

I've always wanted to know more about the world of the unsung heroes in blockchain. Those, being the validators and miners.

How do validators of various blockchains communicate? Is there a place where I can peek into their world, (if any exist) where I can submerge myself in how they think, what they find valuable, and generally ask a tonne of questions?

I understand the answer will vary from ecosystem to ecosystem. But yes, please assist. Where can I find validator groups and communication channels, any common I can communicate with them.

Thanks,