Divergence

Divergence of Life from a Common Ancestor

Human-like Apes

Hominids (Near-Human Species)

Why did various "versions" of humans die out?
We don't know.
Speculative possibilities:

More intelligent strains evolved, which cooperated to kill off the others.
More intelligent strains competed better in the environment.
New strains had stronger immune systems.
New strains had more diverse digestive capabilities for new foods in new environments.