Google integration, BLE mesh, pro


I’m a bit confused due to a lack of information online, so here’s a few questions:

  1. I can’t figure out which devices support google integration.
    Some retailers on AliExpress told me the yeelight BLE gateway pro supports google assistant integration, but only via China servers.
    Is there some kind of official document specifying which devices support google, the global version?

  2. What’s the difference between the regular and pro series?

  3. Are pro and regular devices compatible? (Pro BLE gateway S21 with the regular BLE bulbs M2 and reverse)

I’m planning to buy a large amount of the mesh lamps, and one of the gateways, but I don’t want to do that before I’m sure it’s going to work well with Google home.

Thank you for your help!