Something I have yet to see mentioned is how much Primordial Crucible lore invokes Abrahamic ideas of Angels. Standard disclaimer that as with all traditions, there is variation across time and place, what is considered doctrine vs. folklore.
To recount Primordial Crucible lore 101 -> long ago the presence of extra body parts (eg. wings, horns, eyes, tails) called Aspects of the Crucible was viewed as a sign of divinity. These aspects include both animal and plant (eg. flower, thorns) features, and can be found on all manner of living beings.
Having a chimeric appearance (human-animal hybrid especially) with numerous eyes, wings and faces is a common trope in depictions of angels. The Lamenter transformation even bears an extra face on it's back.
The vision of Ezekiel describes Living Creatures (Hayyōṯ). Divine beings who are the bearers of the throne of God. They have faces of a Lion, Eagle, Ox and Human respectively. In ER, the Horned Warriors are a select group who protect the Divine Tower, they have features of Lion, Bird, Horns (ie. Ox) and Humans.
The Living Creatures are also identified as Cherubim. The Cherubim (and equivalent beings) were seen as guardians of sacred places (eg. temples) (at least as artistic motif).
Crucible Knights are holy warriors that fly on golden wings.
Angels are associated with divine fire and light, if not composed of it themselves. In ER, the Primordial Crucible includes elements of light (see. Golden Bird Feather) but also fire (see. Crucible Breath). Even the name Crucible invokes the idea of fire.
Jacob's Ladder is a motif that depicts a stair/ladder connecting heaven and earth (ie. god and men). Angels are typically depicting travel up and down it. It can sometimes be depicted as a spiral shape (as in William Blake's art).
This basic visual idea of stair/ladder between heaven and earth recurs across the Abrahamic Religions. For an explicit association with heavenly ascent by humans see. The Ladder of Divine Ascent. While the real world concept is meant spiritually, ER literalizes it with Spira, the "column that stretches to the gods". Atop the spiral tower of Enir-Ilim is a Divine Gate. Horned spirit beasts can launch skyward via. spiral currents called Spirit Springs.
Next are Fallen Angels. The broad idea that some portion of Angels sinned and thus lost their standing/were banished by the divine. In some traditions, Fallen Angels are thought to have become Demons.
The sacred status of the Crucible aspects is in the past. In the immediate pre-Erdtree time, the most sacred aspect was horns. You could read into how Christianization of the Mediterranean changed the view of horns/horned beings. From Horned (also. "Storm and Bull") deities being widespread in the region, to horns eventually being seen as a feature of devils and demons.
The holy land of the Crucible was separated from the world, thrown into shadow and burnt by a Satan-like figure.
Mohg features plenty of Demon imagery, but also resembles the Lamenter; whose state is like a "denizen of paradise". Invoking the idea of Angels and Demons as the same beings, pre vs. post fall.
"Luminary" is also title for angel-like beings in Sethian Gnosticism (too obscure a pull maybe?).
There's probably more if you dig for it, this is just all I can say for now.