Google home hub can see things but not group in rooms

Just got a google home hub and connected to ST easily. It can see all of my things but they are grouped under “in my home” but if I try to add them to rooms, they aren’t available. Only the Nest and Hue products are seen. None of the other switches and bulbs, etc. Any ideas?

It was buried deep in Google Home. Settings>more settings> assistant> Home control> rooms