Does anyone know of or run lemmy-centric chat services in any capacity? IRC channels, matrix, discord (controversial I know, but would be perfect for this), whatever else?

I was curious to know which community across the fediverse in a given subject/area is the most popular, but am not sure how to find or know that. Having a place to chat about lemmy offline would be the perfect place to ask such questions or having meta discussions without spamming the actual communities, like I’m doing now.