Atheists do not have theories beyond their position that there is no god. Other than that proposition there is no unifying requirement or universally accepted position
Atheism is absolutly not a theory. It also does not judge. Not too sure about mood ideas, if they pertain to atheism in this bent.
imitationalism
emotionalism
atheistic intelligent design is the theory that everything has been designed, but the creator is not God or a supernatural entity. John Gribbin is an atheistic intelligent design proponent and he concludes human beings are infact the creators of the universe, he calls his theory the "designer multiverse theory" it is a type of atheistic intelligent design. Other atheistic intelligent design proponents include some Buddhists and idealist philosophers who conclude every object in the universe is created from the mind of humans but objects do not exist when nobody is looking at them, what keeps them in existence is experience, Ernst Mach was an atheist who supported this, he called his theory phenomenalism the theory concludes there are no mind independent objects, only sensations are real.
Normative theory is a type of political theory that seeks to determine what a society ought to be like, based on principles of justice, fairness, and equality. It is concerned with prescribing norms and values that should guide individual and collective behavior towards the common good. Normative theory often involves moral and ethical considerations in assessing the legitimacy and ethical implications of political decisions and practices.
Albert Einstein was not awarded a Nobel Prize for his theory of relativity. This theory which might better be described as a hyphothesis, was not overlooked by the judges. The judges were not sure that Einstein's Therory was correct and thus no prize was awarded.
The Theory of Relativity is expressed as E=MC2, which means Energy=Mass times the Speed of Light2.
The Evolutionary Theory
Plato's theory of knowledge, known as the theory of forms, postulates that true knowledge is knowledge of unchanging and eternal forms or ideas. These forms are perfect and ideal representations of things in the physical world, acting as the ultimate reality behind all phenomena. Plato believed that our understanding of reality is achieved through reason and contemplation of these forms.
That is constructionist theory.
Finny's theory about the war is that it is fake.
A mathematical rule can be called many things including a theory. Proofs can prove this theory to be a rule.