Ethereum

Dex volume continues to be an attention indicator. The chains with the highest dex volumes get the most attention because most of the loudest crypto users are traders and as such they will vocalize the chain which they are trading the most on.

lore @optimism | ex: @coinbase | views are my own | what if it all worked out? 

That explain why Sol has been outperforming Eth. Dex volume on Solana has been through the roof while L2s keep cannibalising Eth

where can I find a list of chains with the highest DEX volume?

It's an important indicator to look at the market.