If Archangel Uriel is an angel of the underworld (Hell) real X"D

'Satan' is not the name of a demon. It is a title: 'ha-satan,' which means The Accuser, or The One who questions in judgments. The original Satan is Samael the Archangel. He is a holy angel, who works in the Heavenly Judgments, and asks difficult questions to see if a soul is honesto.?

Lucifer is a mistranslation from the Latin Vulgate Bible.
✅Roman Lucifer: minor deity of dawn, symbol of light and beauty.
❌Christian Lucifer (fallen angel): late theological interpretation based on an erroneous translation.
Biblically: there is no angel named Lucifer.

and Summa Theologiae by St. Thomas Aquinas (I, q.63).

In later Christian tradition: Lucifer was interpreted as an angel who fell because of pride, identified with Satan, but this idea comes from later interpretations and theology, not from the original biblical text.
Source: John Milton, Paradise Lost (1667)

WHO IS “LUCIFER”?
Lucifer was a minor Roman god, son of Aurora (Eos), the goddess of dawn, and brother of twilight (Vesper). He was the personification of the planet Venus when it appears in the sky before dawn, the “bearer of light,” or in Latin ‘Lucifer’ (lux + ferre) = “the one who brings light.”

Lucifer in Later Culture: During the Middle Ages and Renaissance, authors such as Dante Alighieri, John Milton (Paradise Lost), and other writers used "Lucifer" as a synonym for "Satan" to represent rebellion against God.