When the text and content of these passages in Isaiah speak of Lucifer......its the "remnant" of Biblical Israel that is taunting or teasing ....... not Satan, but Nebuchadnezzar II (Isaiah 14:3-21). Isaiah continues speaking of a coming judgment on Babylon (Is 13:1).
On the contrary, the Babylonian captivity is the sole reason for this prophecy. It addresses only Babylon and its king. It's right there in black and white, plain as day.
Isaiah doesn't appear to even acknowledge an evil underworld ruler of the damned. No such creature exists in Hebrew mythology, really. The Satan, or adversary of God, in this case, was Babylon, according to Israel, that is.
In the first century, the Satan was the embodiment of the Pharisees and chief priests who sought Jesus' life (Jn 14:30-31). The Pharisees, their scribes, and the chief priests were the authority who were coming for Jesus but had no claim on him.
He was people. Satan was just people.