Light group in MQTT discovery

I’m trying to find a way for mqtt integrations to have light groups a part of disovery. Been searching forever and to me it seems like this is not yet supported?

Pending on the integration there could be multiple ways for an integration to have light groups. If it is Zigbee groups on a zigbee system, DALI groups on a dali system ++. The common factor would be that it should be easy to add these groups to HA via the discovery.

Much like the recent Helpers to create groups, it would be great it there was a way to the discovery. Specifiy the group with id, name and which entities in the existing discovery process is part of the group

Anyone has another way of doing this?
Using the device - identifier does not seem to be a good fit as this will not create A group, just group the devices as another device