TechYesCity did a video very recently concerning this very thing. It is important to note that one of his sponsors are a site providing grey market keys. He was able to procure several keys from 'the bay' and a few from the site he works with. There is a tool you can use to see the exact version/license info on the particular key you have.
According to the Microsoft tech that it seemed as if he was talking to in the video, their exact words were "if you are activated, you are good". The exception to it being volume license.
And a "refurb" laptop I bought in Feb 2018, little Asus Transformer, for a travel device.
Came with Win 10 Pro.
Fully activated.
Exactly 180 days later....Unactivates itself.
This is what happens when a supposed corporate/volume license cannot speak to its parent key server.
Much bitching between Newegg, the 3rd party reseller, and Asus, all pointing fingers at each other...with me in the middle.
Needless to say, I was incensed.
Asus finally gave me the original license key the thing came with, for Win 10 Home.
Which obviously would not work to activate the Pro install it came with.
So while it may appear Activated...from these grey market sites, you have no idea of the provenance of the actual license.