I loved this episode, so it definitely tells us that Naomi is indeed an ark angel, and not some other sort of being. We also learned that God did at one point exist, had Metatron write some stuff down, then dissapeared. I assume he just went somewhere else, maybe another dimension, universe, who knows. Or maybe he is there, watching everything. But then the ark angels missed him so much they kinda took power and started directing things themselves, and have gone off kilter, away from the original plan God wanted for them. Lots of lore there.
Agree with the other posts, good stuff learned. I love lore heavy episodes.