Hello Robert!
So far, third parties don't have access to accessories that allow playback like TV-Sets, Apple TVs or the HomePod - Apple only. So they are only displayed in the app Home.
In Thread Network in the app Eve the HomePod mini are displayed as Router in Eve 5.1, this will change in the upcoming release of Eve. But it will be HomePod mini only. Nor more information we can get out of the Thread network. But it will show the role (Router/Border Router). Best regards, Volker
Apr 25, 2021