Oh wow, really? I’m actually very surprised that there isn’t a way to do this!
I could see that people might want to group helpers etc in a similar way as well
I don’t mind a custom integration - i found one for virtual devices but it just seemed to create empty virtual devices
Devices are just something integrations use to handle entities that needs to be de-/re-listed.
Users should use entities instead and avoid devices.
Device IDs are a bane! Users do not see it when they use them, but later they are hot with the issues they cause.