GHO was developed by the Aave Companies, led by Stani Kulechov. The Aave Protocol does not a have a management team in the traditional sense, and is fully governed by the Aave DAO.
However, certain critical functions have been delegated to a group of community-elected individuals known as Guardians. These are prominent individuals within the crypto ecosystem.
The Aave DAO, which controls the Aave Protocol, does not have a legal structure in any jurisdiction. It is a set of DAO-controlled smart contracts on the Ethereum chain.