VM activation keys on a Hyper-V Datacenter 2016 host under a 2019 DC license. Which ones to use?

Question

Windows Server

Good afternoon!
Confused about MS licensing.
There is an OLP license for Windows Server 2019 Datacenter.
The 2016 DC version is installed on the host under this license.
What keys to activate VMs running on 2016 std, 2012 std and 2008 std ?
Do you need AVMA keys from a 2019 DC host (as licensed) or 2016 DC host (as installed) ?
PS: 2008, I understand it is impossible. only 2 revisions down. So?
UPDATE
2008 apparently not. The AVMA mechanism itself has only been introduced since versions 2012.

Answer 1

sorry, careless. They are the same =) The list for 2019 is simply extended to the 2019 line
. Confusing the order of the keys.