Creative genius of an individual explained?

It's clear a vast majority of the population are not creative and inventive enough to project their memories and invent something absolutely or magically new. It needs explaining.

How can Ramanujam, Tesla and these type of people explained by genetics and neuronal complexity?

Though one has a feeling of free will its illusory as its caused by dualism interactionism of the mindless robotic non entity (soul) which is immaterial and the physical nervous system. Free thought also is illusory as though how much creative one wants to call oneself it has a memory basis. Prarabdha (current life karma*) gives us orientation yes and in some cases the orientation maybe more in some people. There are cases where this old empire system goofs up and one remembers past life memories. But still regardless of the degree of orientation, thought is hugely dependent on the conscious memory one can access.

Has any homo genus or homonid family group has done anything close to what homo sapiens have done.

*karma - spiritual equivalent of a gene