First up, what a super-weird thread. Fun.
A-theism means (i.e, the word itself) means non-theism. It does nto commit. It rejects. So, prima facie atheism is the rejection of belief in a god/God.
Agnostic means “unknown” basically. So, that speaks for itself. I suppose this has weaker and stronger versions though: Some think we cannot know, as opposed to ‘don’t know’. That said, ‘don’t know’ fits squarely with the etymology of atheist, so I think it helpful to stick to non-overlapping uses of these words thus:
Theist: Believes in a god/God
Atheist: Rejects that same belief
Agnostic: Does not believe we can know whether or not there is a god/God.
As best I can tell, not using the words this way leads to conversations that go absolutely nowhere and people want to cling to the word which fits how they feel, instead of clarifying things for hte sake of efficient communication. It seems to me this thread represents this fuzzy communication, thus far. Nothing moral in this claim, to be sure. Just observation.
ALL of this said, obviously, plenty of people use “atheist” to denote their belief in a lack of gods/God. c’est la vie. I think this unfortunate.
I do not thikn Dawnstorms approach is helpful, as you can tell.