Is there anything that could perhaps be changed? Surely they'd work parallel from one another since their actual individual power levels are so disparate that they won't often even interact with the same people? Or it's sort of like the Court of Owls and Bat Man where they've been there forever and he hadn't heard about them until relatively recently?

Or maybe he's not actually Lex Luthor, he just has the Lex Luthor namesake?