More specific and etymologically correct than sentient.Still less common than that term, but has been used by multiple writers..
But Aliens with Forehead Ridges have much more than a general similarity to Earth Humans.
Only rarely will anybody get to know one on a personal level.
TRADE with them is sporadic, and even WARFARE seems less frequent than it used to be in the GOLDEN AGE.
We can not only communicate, Trade, and fight, but form joint business ventures, cheat each other at cards, and even fall in love.
Indeed, Aliens with Forehead Ridges raise a profound question in evolutionary biology.