All five are client-server models. Server authority and user counterparty risk both decrease from left to right.
Discussion
Can you explain or point to docs on how the counter party risk of liquid is less than ecash?
Cashu is just one implementation of ecash, and Liquid is just one implementation of a sidechain. For a user of a cashu mint, the counterparty risk lies in the possibility that the single mint operator might run off with the funds. For a user of Liquid, the counterparty risk is that multiple federation members might collude to steal the funds.
Figured! Thanks