There’s a new guard on the block, and it is different from the old guard as ethereum’s merge to full Proof of Stake has changed the actors at the center of network security.
While previously Ethermine and China founded F2Pool dominated, now it’s the US exchange Coinbase and the smart contract Lido that dominate.
Source: https://www.trustnodes.com/2022/09/15/coinbase-and-lido-dominate-ethereum-staking