What about Fairphone? EU only (or isn't it?) so I guess it's not a choice for that market where Apple's scanning has been introduced already as of today, but still. Though I've bought an iphone to get away from Google's all-seeing-eyes and won't crawl back to Google's ecosystem now, so I'd like to know more about Fairphone's O/S options. Is their Android de-Googled? AIU they're at least allowing installing alternative OSs without loosing warranty.
Fairphone doesn't offer a custom OS, it's just stock Android. There is nominal support for more open ROMs, but those are third-party (community) efforts. Their selling point is focused on the hardware, not the software.