Jose M. Bertoluci, in a ThD thesis, concludes that Isaiah 14 and Ezekiel 28 can be applied to "the chief Fallen Angel, known as Satan."
Jose M. Bertoluci, “The Son of the Morning and the Guardian Cherub in the Context of the Controversy Between Good and Evil” (Andrews University; Th.D. Thesis, 1985)
Conclusions
After all that has been said in this dissertation , it is my view that there are enough facts which justify the interpretation of Isa 14:12-15 and Ezek 28:12-19 as applying to the chief Fallen Angel known as Satan. Besides the fact that these passages offer a description which transcends the earthly or human realm. ( 1 ) They fit an angelic context where a rebellion against God would have occurred. (2) The context of the Isaian passage presents eschatological features and a tension between immediate historical events and a universal event with the text straddling two words. (3) The Isaian Apocalypse shows that the prophet was aware of the sin of angelic beings and their fall , as well as of their punishment. (4) The Book of Isaiah presents a kind of emphasis on the contrast between Babylon and Jerusalem (or Zion) and their final fate — which reinforces the point I am trying to make. In so-called First Isaiah, we find the oppression suffered by the people of God and Jerusalem and a promised happy end in contrast to Babylon's (Assyria's) tyranny and her final defeat and destruction.