So just playing with was of discovering SharePoint…. and this method…. has seem to be lost over the years!
Here is the technet material about how this is done via the SharePoint / AD (I.e marking your AD where SharePoint has been installed and also gives you the ability to block new installations!) - https://technet.microsoft.com/en-us/library/ff730261(v=office.14).aspx
As you can see, I currently have 3 (active) installations of SharePoint within my Active Directory.
Great to see this is still in SP2016, considering it made its first appearance in SharePoint 2010 back in the day.