Disable Win 10 "Lets finish setting up your device" and other advertising computer wide

Win 10 has some default enabled advertising 'features':

• Show me the windows welcome experience after updates
• Suggest ways I can finish setting up my device
• Show suggested Apps in Start menu

These can be disabled per user with the registry keys: [HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\UserProfileEngagement] "ScoobeSystemSettingEnabled"=dword:00000000

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ContentDeliveryManager] "SubscribedContent-338388Enabled"=dword:00000000 "SubscribedContent-310093Enabled"=dword:00000000

I need to disable these settings en masse to a number of PC fleets that use different machine management technologies.

1. Does anyone know an OMA-URI that can manage these settings?
2. Does anyone know a Per Machine registry key that will disable these features for all users?
3. If the above two options fail, can I create these keys in .default so that they'll apply to all new users when deploying a machine? ie: [HKEY_USERS.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ContentDeliveryManager]

TIA.

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