One of Elden Ring's most defining traits is bound to be its inscrutable narrative. Though the world comes from George R.R. Martin's mind, from what we've seen, it will take hours and hours to fully unpack the mysteries of the Lands Between.
The Nier games aren't quite so opaque, but they are tremendously weird and filled with symbolism and strangeness that gives even the densest Souls-likes a run for their money.
The combat in Automata is a pared-down variant on Platinum's normal fare, so the gameplay is closer to Elden Ring as well. It wouldn't surprise me if there were unexpected sentiences in the Lands Between too, though whether they'll sing "This cannot continue" together is anyone's guess.