The address, known on the Flow blockchain as Node ID, of the validator.
The role of the node from one of the following options: collection, consensus, execution, verification, access. See the Flow documentation here for more.
The overarching project name, related to the address name. For example, Kraken (vs. Kraken Deposit Wallet for address_names). For validators, this will be the name only if provided as most validators do not provide such a name.