Those 3rd-party apps are never installed by Windows. What you're seeing is Suggested Apps pinned to the Start Menu.
The normal solutions are:
1. Remove Content Delivery Manager (but you will lose the Spotlight wallpapers), and no suggested apps or content are displayed.
2. Find the long list of equivalent CDM reg keys which block all content suggestions, including Apps.
3. Create a fixed Start Menu layout XML file which overrides the pinned layout.
OfficeHub is the the only pre-installed app as it's part of every recent Windows release.