Am I wrong to say that an atheist is a person that is convinced that there ia no creator? or is it 'that there is 'no God' only?
Depends on the atheist. For me it just means I have no evidence to lead me to believe in God or anything supernatural.
is there a word for a 'non-believer in a Creator',
Yes. Atheist.
a claim as grandiose( even if unintended) of atheists, 'we are the highest intelligence (just watch us develop further)'
You are painting with an awfully road brush. I have never made that claim nor would I, nor would most of the people I know. You are making claims about what other people say and those claims are easily shown to NOT be true.
Caedes, yes, 'c' is material beings limit, but what if life is entangled at the smallest level?