I'm good with understanding the loads. I've been shotgunning my whole life.
What I'm confused on (ignorant about) is the wide variation of how people use the different wad material, and it's order stacked in the barrel. There seems to be quite a bit of variation in both materials and their order almost to the point of everyone having their own way of doing it.
Like your last comment on wanting the lightest wad between powder and paper so it doesn't affect your spread. That makes a ton of sense to me. Other people don't seem to agree with that. I watched a guy who used what almost looked like a wooden or cork disk over the powder, and then a ball of flax fibers, and then another disk of card stock before he poured in his shot, and then more flax fibers and then another card stock...
I'm sort of a k.i.s.s. guy, so this looked too involved and perhaps unnecessary. I just want to know if there is any kind of consensus at all, and hear people's reasoning on why they use the materials and load the way they do. I should have been more clear in my OP.