As long as you turn on “Advanced Data Protection” then iCloud is end to end encrypted.

This doesn’t include mail, calendar or contacts but for iCloud files (which would cover what’s being asked here) it is e2e encrypted.

Outside of work I’ve degoogled with the exception of google calendar (shared family google calendar so that would need to bring everyone along with me!) and unfortunately the google Wi-Fi/nests.

I would like to swap out the google Wi-Fi but it just seems like such a lot of money to waste and they are working at the moment for the mesh Wi-Fi. I’ve just made sure to disable and opt out to as many of the google analytic tracking as possible.