Hyper-V Connection Credentials

I'm building a new Veeam server (Server 2022, ReFS repository, all-in-one setup) running Veeam Backup Essentials v11A. The Veeam server is not domain-joined, but the standalone Hyper-V servers that will be backed up are. The servers we'll be backing up are standalone Hyper-V servers with local storage - when I add the standalone Hyper-V servers to Veeam's inventory, is there a best practice regarding which account I use to connect them to the Veeam server? Right now, the current setup has them added via the default Domain Admin account - should I be using a domain admin account or local admin account? I looked over the docs and I suspect I'm just using the wrong terms in my search because I can't find an answer