Mostly what I'm getting at here is that to the non-channeling population the whole Light/Dark/Soul etc is basically unimportant. Villagers and even large city dwellers who have nothing to do with the OP hold celebrations and festivals around the natural world, i.e. Equinoxes and traditional weather patterns (trade winds ect) coming and going and rather than assign religious-type connotation to these holidays, they respect that it is the world and the Pattern they "give thanks" or "show respect" for. Until these people are introduced to the OP in a more direct way they hardly believe in it because for most it is such a rare thing. Outside of societies that include channelers there is little or no reference to souls, rebirth or salvation outside of very specific circumstances like oath taking, because these societies have no way of using the OP to "magically" enforce an oath.

When you get into the societies where the OP is used in a more obvious function you start seeing a more systemic belief system, which seems to come in the form of various honor-code systems such as the Borderlanders seem to have or Ji-e-Toh or even the Seanchan "lowering of eyes". Yet even in these societies there is very little conversation around religious ceremony, they are all more rooted in personal accountability for the most part, or to some degree fate/pre-destination.

It's really only Channelers and those closely associated with them who overtly seem to realize that the Creator and the Dark One have an agenda and are "true believers". Aes Sedai appear to be to the only real group who have some level of a religious type nature, Wind Finders and Wise Ones are much more like community leaders who focus on practical real-world needs and functions.

Even the Children of the Light don't seem to have much in the way of a belief system so much as they have a worldly based purpose to root out Dark Friends. The Whitecloaks don't even appear to have a direct worship of the Creator so much as they are invested in stopping the human evil around them. They don't really even seem to care about reforming suspected Dark Friends as they do about killing them off and gaining worldly power. Take Pedron Nial as an example, his biggest concern was accumulating more power for the Whitecloaks and himself, never once does he think about his immortal soul. I suspect part of this has to do with what appears to be a fact that you must willingly go to the shadow (at least non-channelers) thus your soul is inherently safe with the Creator unless you pledge it to the Dark One of your own accord. Thus the average WOT person has no worries about being cast into some version of hell unless they choose to make a literal deal with the devil.

I suppose it can be argued that we simply don't see the more religious aspects in the world because they don't really need to be present to drive the story, but I do tend to believe that RJ made the unknown/mystical parts of his world a far more scientific pursuit to the characters we interact with. Everything appears to have rules and boundaries that can be explained, even when there is probably more to it. My sense from the what we heard from even the AOL is that these people had codified the OP with a scientific method and tended to ignore the more metaphysical aspects, someone like Ishamael was likely highly thought of precisely because he seemed to buck the system and write philosophical books about the nature of reality. Lews Therin even thinks to himself that this was Ishamael's undoing. Another small tidbit we get in support of this mentality is that the Horn of Valere was considered some kind of curiosity in the AOL because it came from an earlier Age and the more practically focused AOL society looked at it as outside of the rules they had established. The Portal Stones were explored prior to the AOL and there is a clear numerology-based mythology around them, but the AOL Aes Sedai seemed to not care much about how or why around them, they simply studied them and used the findings for further scientific value.

The first few books we saw much more "magic", but once the main cast starts truly using the OP it becomes more of a sci-fi type system IMO and as we get peeks into the AOL we start seeing constructs and tech-esque devices rather than individual humans casting spells or even praying for power. I've seen a few theories on here that equate channelers to clerics, and I don't 100% disagree with the thought process, but there is nothing in the system to show that faith in the Creator gives greater power or ability. The True Power is much more along these lines since it is 100% based on what the Dark One chooses to give an individual.