A bit late but try
Henri Marie Bouden - Devotion to the Nine Choirs of Holy Angels. [alphabetically ordered]
You’ll find the differences between the choirs more clearly written of there than one is likely to find in many other places.
For example:
The first hierarchy is composed of the Seraphim, Cherubim, and Thrones; it receives its lights immediately from God, which by it are communicated to the two other hierarchies.
The Seraphim excel in the pure love of God only, their very name signifying ardour and burning. All the angels are admirable in the love of God, but the Seraphim are incomparable therein.
Seraphic love signifies intense love, which is ever burning and consuming. The great St Denis mentions eight properties which belong to it, and which he compares to those of fire.
Fire is in constant motion, and the spirits of the Seraphim are continually tending in an ineffable manner towards God.
Fire is ever active, and the Seraphim are incessantly intent on God only, never being occupied, even for the space of the briefest moment, either with themselves or with any created thing.
Fire is inflexible, and the love of the Seraphim is invincible; nothing can prevail against it.
Fire is intensely hot ; and the love of the Seraphim is a burning love.
Fire, so long as it flames, never loses its light, and the strength of Seraphic love abides ever in its fulness.
Fire is penetrating ; and the love of the Seraphim, not satisfied with an ordinary degree of union with God, desires the closest and most intimate.
Fire not only penetrates what is combustible, bat permeates it throughout ; and Seraphic love plunges, loses, and ingulfs itself in the abyss of the Divinity by a glorious transformation.
Fire communicates warmth and purifies; the Seraphim carry love and light into all the choirs of the inferior angels.
Light is attributed specially to the Cherubim, as love to the Seraphim. They are not only styled learned in the divine science of Heaven, but St Gregory affirms that they have the very fulness of it. Divine light imparts to them admirable knowledge, and the holy effulgence with which they are replenished is reflected in abundant streams upon the other hierarchies. They are represented by the Prophet Ezekiel under a sensible figure, with eyes on all sides, because these spirits are all light and brilliancy.
'The Dominations, as lords or primates of the second hierarchy, give orders in the things of God; the Virtues impart strength to obey them; and the Powers resist the devils who oppose their execution, overthrowing their might, and removing all the obstacles that stand in the way.
It is, then, the Dominations who communicate the commands of God, and make known to us His holy will.’
I love that book! I have read it several times. I think it was reading that book, more than anything else, that has made the truths of our faith “real” to me, and instilled in me a zeal for holiness.