Compassion somewhat correlates with Chaotic Good. Justice with Lawful Good. And Mercy with Neutral Good.
‘Evil’ is essentially predation, that harms others to help oneself only.
Some of the greatest evils have been done in the name of a greater good, heck even in some cases with self sacrifices. Even evil can be selfless at time.
Anywho I've giving it some thought and perhaps a kind of Henotheistic kind of Monotheism could work.
Here is my idea, "God" is basically the Platonic ideal of good encompassing an infinate amount of good, in an infinate amount of ways, with an infinate amount of beauty, glory, and virtue, including virtues that would be seen by mere mortals and immortal beings as paradoxical.
But as an infinate being that is already everything good and every possible good, its static and unchanging directly.
But it gives off eminations, the gods, which are facets of God and independant from each other, like faces on diamond.
Each god represents a different ideal of good, an infinate glorious understanding of that ideal of good, but only that good, for only God contains every type of good.
Just as God has eminations, the gods have eminations, because the gods physically manifest as infinate celestial planes, so they work through the Domains, Domains are Angels who basically form when a god tries to understand and interact with mundane aspects of reality. The Domains functions as minds that are embodied by forces. This can make it harder fir them to interact on a conscious level with mortals and immortals, so the Domains have their own eminations, Solars.
Solars are physically embodied by celestial flesh, which makes interacting with lesser beings easier, but they lack the relative omnipresence of God, gods, or even Domains, so they they too create emminations, Planatars, who in turn have Deva emminations.
The other Celestials races are the gods attempts at creation via a method other them emminations of themselves, with Empyreans being their more successful, if still failed attempts at creating new gods (with Atropals being the more horrifically and sadier failures).
Primordials are failed attempts at creating new material planed by the Angels and other Celestials, these failures end up unbalanced turning into different unique manifestations of what are functionally elemental planes. There are many Primordials of Fire for example, but while they are all elemental planes of fire, they all are unique takes on it.
The Far Realms are alien realities that germinate in the Astral Darkness outside of the influence of God.
They and their creations the Yugoloths and their mortal incarnations abberations are the only beings completely ourside of God, who is emminate in everything else, including even mad and horrifying Demons who are still apart of God's creation.
The Far Realms are mad planes and Lovecraftian horrors, but not all are Evil, more Evil by lack of understanding reality. In fact in the rare case a Far Realm manages a even tiny grasp of reality it tend to lend to rare goodly and neutral Aberration species like Flumps appearing.