Robert Comsol wrote:
I can't imagine the other members of the UFP are just sitting still while the USS Enterprise is put to space with an exclusive homo sapiens club, so I guess the statement suggests various alien species serving on that vessel
There's conjecture that Number One is not a Human. Spock, of course, is Vulcan. Spock's assistant (seen briefly) has a interesting shiny skin appearance and could be of a different Federation species than the Humans aboard. So with the Humans, that makes four species just on the ship's bridge.