@Canning1452 @GrapheneOS Imho Nothing are too proud of their OS to work with GrapheneOS, they don't want users to flee the Nothing Experience. Also, Samsung is locking down everything (no more OEM unlocking on some of their recent phones), they don't look open to this kind of things.
Fairphone would be a better guess imo. Even if they already have /e/os, it proves they are open to alternative OS.
Otherwise Nokia, Sony and Motorola could do this too. They are not popular nor trendy in any way.