I've disabled the vast majority of Google apps that ship with the phone:
- Chrome: privacy related, not necessarily garbage, but if the OS were Chinese we'd effortlessly call Chrome's behaviours spyware. I use Firefox
- Photos: random single-touch dialogs offering to enable sync. This is upsell and another opt-in data grab. Also the source of the aforementioned ITS 4AM WAKE UP AND HAVE A DELETE MEME PARTY notification. I use f-spot but I'm not a huge fan of it
- Messages: can't remember. Probably another notification thrown up without warning. I use Pulse now
- Maps: where to even begin? The app has about one UI element left that actually relates to navigation and the rest is some disguised Google Shopping link. I use the paid version of OsmAnd where possible
- Gmail/Accounts: phone book data-grab. I use Outlook
- Gboard: still using this. Still very aware its forwarding my keystrokes to the mothership for "contextual prediction" or whatever you call it. If Gboard were published by TikTok rather than Google we'd have sent some folk to the electric chair over it already
- Play Services: mandatory back channel to the mothership with root access on your phone. Can wake it up, force install something that listens to you, or update itself to force you to click on WHO adverts^W^W^W^W participate in informational and beneficial COVID-19 contact tracing, so much more
Probably forgotten quite a bit. Mandatory Games app IIRC? That would have been disabled on the first day