List of Windows 7 telemetry updates to avoid
http://www.wilderssecurity.com/threads/list-of-windows-7-telemetry-updates-to-avoid.379151/
KB2952664 Compatibility update for upgrading Windows 7
KB2990214 Update that enables you to upgrade from Windows 7 to a later version of Windows
KB3021917 Update to Windows 7 SP1 for performance improvements
KB3022345 Update for customer experience and diagnostic telemetry
KB3035583 Update installs get windows 10 app in Windows 8.1 and Windows 7 SP1
KB3068708 (replaces KB3022345) Update for customer experience and diagnostic telemetry
KB3075249 Update that adds telemetry points to consent.exe in Windows 8.1 and Windows 7
KB3080149 Update for customer experience and diagnostic telemetry