Search, Gmail, Android, Chromebooks, Nexus, Pixel, Youtube, Maps etc. everything is about selling advertisements after scanning user provided data.
The rest are either loss leaders or moats, or ones with unclear monetization scenarios like Fiber. One exception is GCE and GAE, but I don't know how much profit/revenue they're making. I would count Google Apps, but until recently they were scanning even paid Google Apps for Business accounts for ad tracking purposes.