Layer 1 & Layer 2
The networks the rest of the market is built on, and the chains that scale them.
Layer 1 is the settlement layer. Bitcoin, Ethereum, Solana, Cardano, Avalanche, Polkadot and the rest of the base chains. Layer 2 & Scaling covers the networks built on top of them to make settlement cheaper. They sit in separate sub-markets because they behave differently. A Layer 2 tends to trade with the chain beneath it, and filing them together is how you spot it.
How the list is organised
Four hundred and fifty markets is a list nobody scrolls. Every pair the venue lists is classified into a real sub-market and sorted by the day's actual traded value, so the largest names in a sector are at the top of it rather than wherever the alphabet put them. Anything the classification does not recognise lands in Other markets rather than being dropped.