Looked more into it, this seems to put Tezos somewhere in the middle. https://medium.com/tezos/liquid-proof-of-stake-aec2f7ef1da7 https://medium.com/tezos/liqui

Looked more into it, this seems to put Tezos somewhere in the middle. https://medium.com/tezos/liquid-proof-of-stake-aec2f7ef1da7 https://medium.com/tezos/liquid-proof-of-stake-aec2f7ef1da7 However after reading that I am pretty sure the current Ethereum Serenity spec allows for delegation as well, so it seems to be on the same level Proof of Stake