I prefer Calyx on my phone, for the sake of the extra privacy of Micro-G vs sandboxed Google Play Services.
You should give DivestOS a try tbh if you prefer microG to Sandboxed Play Services, since Divest’s implementation of microG is sandboxed/unprivileged unlike Calyx’s, which is a massive privacy and security benefit. Divest in general is a lot more private and secure then stock or Calyx, since it includes a lot of hardening and patches from Graphene, so I’d recommend it as the second best option to Graphene in general, and definitely by far the best option for using microG. Divest also covers most of the same phones Calyx and Graphene do, unfortunately no Pixel Tablet support though.
(I’m not trying to shill Divest or anything btw lol, I just think its a great underrated project that deserves a lot more recognition and support than it has, and seems to fit your use case)
I 100% agree, its best to just stick to upstream Fedora imo. Glad you made this comment. The security issues of Nobara always put me off, especially since basically everything it does can just be applied to regular Fedora. I think Nobara would much better serve as a script or toolkit, similar to Brace, or something along those lines instead of an entire separate OS with the security issues it brings.