That's really something about Semjase. I think they all give fake names that symbolically veil what they're about.
There's also Commander Ashtar. Possibly named after Ashtaroth (a demon):
According to Sebastien Michaelis, he is a demon of the First Hierarchy, who seduces by means of laziness, vanity, and rationalized philosophies [channeling, anyone?]. His adversary is St. Bartholomew, who can protect against him for he has resisted Astaroth's temptations. To others, he teaches mathematical sciences and handicrafts, can make men invisible and lead them to hidden treasures, and answers every question formulated to him [I bet black ops groups love him for that]. He was also said to give to mortal beings the power over serpents.
According to Francis Barrett, Astaroth is the prince of accusers and inquisitors. According to some demonologists of the 16th century, August is the month during which this demon's attacks against man are stronger.
The name derives from Ashtoreth or Astarte, an ancient goddess. She was the sister of Asherah, whom some scholars claim was the original wife of Yahweh, before she was edited out of Judaism.
Astarte was connected with fertility, sexuality, and war. Her symbols were the lion, the horse, the sphinx, the dove, and a star within a circle indicating the planet Venus [like the Venusians of contactee lore?]. Pictorial representations often show her naked. She has been known as the deified evening star [aka the morning star, Lucifer].
Other major centers of Astarte's worship were Sidon, Tyre, and Byblos [the original homeland of the proto-Israelites, and the Phoenicians. There are megaliths there like Baalbek, which required advanced tech to build]. Coins from Sidon portray a chariot in which a globe appears, presumably a stone representing Astarte [I suspect that's an alien artifact that was paraded around back then].
I'm going to watch the vids you posted and think a lot about this.