That's interesting, I may just do the same thing as well - the camera is the largest thing of why I want to be on an phone.
I may just go LineageOS.
I may just go LineageOS.
The big advantage to CalyxOS or GrapheneOS versus Lineage is they support re-locking the bootloader, which means that verified boot still works - important if your phone gets swiped.
Many apps are also compatible with GrapheneOS and installing https://grapheneos.org/usage#sandboxed-play-services provides broader app compatibility.