I am convinced that humanity began with just two originators. I am unaware of any other way it could have begun.
Regarding gurus and novices, I am probably more in agreement with Muslims, who say that 'There is no God but God.'
As to the links you have provided, I am listening to the first now (with a mouthful of mercury amalgam fillings), and I appreciate information to consider myself, such as you have generously provided.
Thanks!