In wow i see order/arcane as a concept of neutrality rather than lawful, The titans saw chaotic words and shape then in order, but they don't say there to keep the "laws", and you know, lawful neutral exist exactly to answer this, as a primal force of neutrality with beings(titans) actively ordering the cosmo with their own vision.
Every path can be a truth, yes, but in chaos you don't have those "truths", a chaotic force don't know the future.And that's specificially what Blizzard told us about the Void. They're not united. They consider every path true. Nobody has even claimed to want to make everything into Void. We only have that the Void Lords specificially want to consume everything, but that's neither the Void nor a common goal. Besides, a goal still isn't a law. Even if an entire force had a single common goal, that would not necessarily make them lawful.
Like i said, my view, which is prob wrong, since things will change as expansions go, so this is pointless.