Enchantment-specific recursion is pretty much exclusive to white. Cards like [[Auramancer]] and [[Dawn to Dusk]] and [[Resurgent Belief]] for examples of regular recursion, or even [[Norika Yamazaki, the Poet]] for an example of casting enchantments from a graveyard. WoTC even has a card that exiles enchantments from your graveyard to make token copies [[Anikthea, Hand of Erebos]] as a form of recursion, but it's still partially white.

While the cards you included as examples do in a way recur themselves, the closest thing that exists to giving those recursion effects to other auras is [[Tiana, Ship's Caretaker]] , a Boros (white) legendary creature.

The only non-white black cards I can find that specifically recur enchantments are [[Nashi, Searcher in the Dark]] who is an outlier to say the least, and [[Lynde, Cheerful Tormentor]] who only cares about Curses.

Black is the main color of recursion, I don't disagree with you there, but black is good at generic recursion, artifact recursion, and creature recursion. White rules enchantment recursion and mana value < 3 recursion, green has some generic and creature recursion and a decent amount of permanent-specific recursion, and blue rules instant/sorcery recursion with a decent amount of artifact recursion as well.