The aspect of Mankind: one billion years a.C.

I have not yet reached the limit of my biggest project, "Time Odyssey" which extends up to a billion years in the future. however, I've been thinking about some of the ways in which humanity could evolve to that time, so I did five probable models:

1) GE species, descendants of humans who left the Galaxy. Long after they returning to the Milky Way.

2) Descendant derived , preserves the structure of Earthly tetrapods, evolved after several hundreds of millions of years on a different planet.

3) Mechanical entity, beings who have transcended its organic form.

4) GE species, would emerge after several evolution and extinction events, both natural and artificial causes.

5) Metaphysical entity (The Metahumans), after visiting different alternate realities, these beings transcended to a more advanced form capable of crossing even to other dimensional planes.