It might have already been said, but there is inherently going to be a bias problem in determining which coins are established.

For example, I think everybody can agree that Litecoin, Dogecoin, and Ethereum are both established. But what about e.g. Solana which has market cap #3?

What about something like Bcash? [this will probably bring a strong no but then it's going to tarnish this forum's purpose as a "free-speech crypto discussion place"].