What are some leading hypotheses (informed theories) about how our species emerged? how are humans different?

"Out of Africa" model of pattern of human evolution, clinical variation model of Center and Edge, and the Assimilation Model.

Explanation:

There are many hypotheses and the scientific models that provide the alternative explanation to more of the widely accepted theorems of the out of Africa models and they describe the multiplication patterns of the human species and the archaic human forms such as those of the Neanderthals. The Center and the Edge model that allows for the balance between the genetic drift, the gene flow, and the selection till the Pleistocene as well as the over evolution of the global species. This Multi regional hypothesis was proposed in 1984 by  A Thorne and the Xinzhi.