Humans were the first of their kind to populate Na'Endreth. Naturally they served as an evolutionary template for experimentation by the Gith. As a result many humanoids wander the earth. The term humanoid roughly equates to a creature that can trace its common ancestor back to human lineage. Some beings not on this list fit under the same definition, however in convergent manors.
To differentiate more sensibly scholars have distinguished the following races under the Homo genus.