There is a thread in the intro forum here that asks which religion you are. I find several issues with that poll. It focuses on established religions and nearly 50% of people said either nonreligious or other, myself included. The DIR forums have a broader reach overall and pretty much everybody...
There is no special Agnostic stance on its own in non-religious stances it applies to KNOWLEDGE claims which is Gnostic (has knowledge) and Agnostic (lack of knowledge). Theism and Atheism covers BELIEF claims about in this case deity claims. So one can be if an Atheist a Gnostic Atheist has...