And MacOS, which I suspect may be the more obvious choice for many users.
macOS and iOS both send Push Notification data directly to the US federal government, according to Senator Ron Wyden: https://arstechnica.com/tech-policy/2023/12/apple-admits-to-...
MacOS has basically the exactly same problem, ADP isn't enabled by default and your data gets backed up to iCloud unencrypted.