Windows 10 does a lot of spying with a clean installation. During the installation, you have the option to turn off most of the spying. ( Of course, Microsoft doesn't call it "spying", but it really is. Microsoft calls it "feedback", "research", "user enhancement" or some other terms that some people will fall for, but let the buyer beware, Microsoft wants your personal data.....I refer to it as "Telemetry") There are a couple of other options that have to be turned off after the installation. This particular build loaded a lot less spying apps than the free Windows 10 upgrade that was available thru June 2016. That build loaded a lot of applications during startup. I just finished finding and disabling them all. The last couple took some research and tracking. This current build installation had a couple spying apps that I disabled, but nowhere as many as the "free upgrade" build had. I didn't have to change any Registry entries on this build to stop the spying.
I did have to modify the registry for a couple of other issues. 1) When the monitor is turned off and then back on all the open application windows were being moved to the upper left corner of the screen as well as being resized for a 1024 by 768 resolution screen, even though I am running 1920 x 1080 resolution.
2) If you find you are having in home network permission problems and you are using a Microsoft Account...good luck with that. I had to disable the Microsoft Account and get rid of the passwords and PIN to allow access to any home computer, printer, file server, etc. And Microsoft lets us think that a newer OS is safer.....
Google has become a computer users best friend, when you are finding out ways to disable all of the Windows 10 spying.....