Where is it documented that Lucifer is a man and is named Samael

The word Lucifer appears once in the Bible in Isaiah 14.
It tells you that it is king of Babylon

History tells us that it is Sennacherib

In my opinion demons get a bad rap.

They are just primordial forces that make the planet run. Under divine control, they did their job and the world was a paradise. When God wanted to had over the management of this paradise to a new creation, Man, Lucifer couldn't take it and argued he should maintain control because Man would screw up this perfect world. He didn't win, in fact he got a demotion. He then tempted man in order to separate him from his Divine connection, which he did, and Man proceeded to screw up the world, just as Lucifer had predicted.

The title "Lucifer" actually means "light bringer" and in a sense, he plays a bit of a Promethian figure, bringing the "enlightenment" of free will to mankind. Some say, this was what God wanted in the long run because it proves nothing for an automaton to mimic the Divine if it doesn't have free will of it's own. People are going to disagree, that's ok, everybody has their own religion, this is just a different way of interpreting the facts that some might not have been exposed to, here's their chance to take a second look.

Lucifer is not Samael. 2 different beings.

No, not a man.

Angels don't have genders. Neither did we before the fall.

Lucifer seperated the masculine and feminine qualities by creating the male and the female physical form. To put us at odd against one another. This is his creation of good and evil afterall. Peace and harmony is not the aim here.

Also you're looking for the The Hypostasis of the Archons
(The Reality of the Rulers).

Would take it with a pinch of salt.

lucifer is the first created spirit by God the Creator of all. God could not be seen not even to the angels. They felt God but not see him. They experienced the presence of God. Angels are not divided like man. They have two natures within masculine and feminine. That is why when people have seen their appearance they appear Beautiful They still have the masculine nature more dominant than the feminine nature. We on the other hand have a separation man is divided the two natures are separate. Nevertheless man still has somewhat of the feminine nature within which is God removed a rib from Adam forming a woman. He removed a part of the feminine nature from man forming woman.