LineageOS, iodéOS or PostmarketOS for Fairphone 5?

You really don’t have to give me shit for it but I’m not exactly in a situation where I can purchase a phone for the sake of switching to a specific custom ROM. I don’t really have any issues in theory with GrapheneOS and the only reason I can’t use it is because it is simply not supported. If it was, the question of at least Lineage vs iodé vs Graphene would be an easy one, and this post would be titled GrapheneOS or postmarketOS? I fully understand why the team at Graphene decided not to support Fairphones, since it doesn’t meet their standards. It is simply a consequence of that decision that I therefore am unable to use it unless/until I somehow have a new phone which supports it. Until then, the options in the title of this post are my options that I’ve narrowed down.