As far as king Nebuchadnezzar being Lucifer it is not true.
Dan 2:46 Then the king Nebuchadnezzar fell upon his face, and worshipped Daniel, and commanded that they should offer an oblation and sweet odours unto him.
Dan 2:47 The king answered unto Daniel, and said, Of a truth it is, that your God is a God of gods, and a Lord of kings, and a revealer of secrets, seeing thou couldest reveal this secret.
Dan 2:48 Then the king made Daniel a great man, and gave him many great gifts, and made him ruler over the whole province of Babylon, and chief of the governors over all the wise men of Babylon.
Dan 2:49 Then Daniel requested of the king, and he set Shadrach, Meshach, and Abednego, over the affairs of the province of Babylon: but Daniel sat in the gate of the king.
Here is what king Nebuchadnezzar said about the God of Israel that He is a God of gods,and a Lord of kings,acknowledging him as the greatest God of the gods.
Dan 3:28 Then Nebuchadnezzar spake, and said, Blessed be the God of Shadrach, Meshach, and Abednego, who hath sent his angel, and delivered his servants that trusted in him, and have changed the king's word, and yielded their bodies, that they might not serve nor worship any god, except their own God.
Dan 3:29 Therefore I make a decree, That every people, nation, and language, which speak any thing amiss against the God of Shadrach, Meshach, and Abednego, shall be cut in pieces, and their houses shall be made a dunghill: because there is no other God that can deliver after this sort.
Dan 3:30 Then the king promoted Shadrach, Meshach, and Abednego, in the province of Babylon.
Here is what king Nebuchadnezzar said about the God of Israel,blessed be the God of Israel,and he proclaimed throughout his kingdom,and all the nations that he ruled over,that everyone acknowledge the God of Israel,and if anyone said anything amiss against Him they shall be cut in pieces,and their house made a dunghill.
Dan 4:34 And at the end of the days I Nebuchadnezzar lifted up mine eyes unto heaven, and mine understanding returned unto me, and I blessed the most High, and I praised and honoured him that liveth for ever, whose dominion is an everlasting dominion, and his kingdom is from generation to generation:
Dan 4:35 And all the inhabitants of the earth are reputed as nothing: and he doeth according to his will in the army of heaven, and among the inhabitants of the earth: and none can stay his hand, or say unto him, What doest thou?
Dan 4:36 At the same time my reason returned unto me; and for the glory of my kingdom, mine honour and brightness returned unto me; and my counsellors and my lords sought unto me; and I was established in my kingdom, and excellent majesty was added unto me.
Dan 4:37 Now I Nebuchadnezzar praise and extol and honour the King of heaven, all whose works are truth, and his ways judgment: and those that walk in pride he is able to abase.
This is what king Nebuchadnezzar said concerning the God of Israel,that he blessed the most high,and honored him,and He does what He wants and nobody can stop Him,and does His will in heaven,and on earth,and the inhabitants of the earth are reputed as nothing,and God rules in the kingdom of men,and gives the kingdom to who He will.
Dan 7:4 The first was like a lion, and had eagle's wings.
Dan 2:37 Thou, O king, art a king of kings: for the God of heaven hath given thee a kingdom, power, and strength, and glory.
Dan 2:38 And wheresoever the children of men dwell, the beasts of the field and the fowls of the heaven hath he given into thine hand, and hath made thee ruler over them all. Thou art this head of gold.
Dan 4:1 Nebuchadnezzar the king, unto all people, nations, and languages, that dwell in all the earth; Peace be multiplied unto you.
Dan 4:2 I thought it good to shew the signs and wonders that the high God hath wrought toward me.
Dan 4:3 How great are his signs! and how mighty are his wonders! his kingdom is an everlasting kingdom, and his dominion is from generation to generation.
Dan 4:36 At the same time my reason returned unto me; and for the glory of my kingdom, mine honour and brightness returned unto me; and my counsellors and my lords sought unto me; and I was established in my kingdom, and excellent majesty was added unto me.
Jer 27:6 And now have I given all these lands into the hand of Nebuchadnezzar the king of Babylon, my servant; and the beasts of the field have I given him also to serve him.
Jer 27:8 And it shall come to pass, that the nation and kingdom which will not serve the same Nebuchadnezzar the king of Babylon, and that will not put their neck under the yoke of the king of Babylon, that nation will I punish, saith the LORD, with the sword, and with the famine, and with the pestilence, until I have consumed them by his hand.
During the reign of king Nebuchadnezzar Babylon rode on eagle's wings,because they had the revelation of God,and it was God that caused Babylon to flourish,and prosper,for God gave him the kingdom.
King Nebuchadnezzar proclaimed the God of Israel as the supreme God,and acknowledged Him until the day he died.
King Nebuchadnezzar is not Lucifer.King Nebuchadnezzar's son Belshazzar took the throne,and blew it,even though he knew what his father believed,and Babylon lost the revelation of God,but they say he only ruled for 2 years and then the Medes and Persians conquered them,so Belshazzar did not do much in his rulership.
Babylon then would be known as the kingdom of man because the more you know and blow it the harder you fall,which is why the beast kingdom is referred to as Babylon,although it is Roman Empire dominion,because the beast kingdom is known as the kingdom of man.
Which the Bible says that Babylon will never have dominion again,but her life is prolonged for a time and season,which means her ways are still on earth,and will be punished in the future,and a person either belongs to Babylon,the kingdom of man,or the kingdom of God,and in Babylon is found all that was slain upon earth,which cannot apply to physical Babylon,but spiritual Babylon in the future and Satan influences the beast kingdom which is the dominion of the Roman Empire,and God puts them down.
Isa 14:12 How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!
King Nebuchadnezzar did not fall from heaven,for he was born on earth.
Isa 14:13 For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north:
Isa 14:14 I will ascend above the heights of the clouds; I will be like the most High.
King Nebuchadnezzar did not say that he will exalt his throne above the stars of God,and be like the most high,for he acknowledged the God of Israel,and said He is a God of gods,and a Lord of kings,and the greatest God out of all the gods,and praised him,and honored him,and proclaimed throughout his kingdom to acknowledge the God of Israel,and if anyone said anything amiss against Him they would be cut in pieces,and their house made a dunghill,and said it is God that rules in heaven,and earth,and the inhabitants of the earth are reputed as nothing,and praised God for giving him the kingdom.
Isa 14:15 Yet thou shalt be brought down to hell, to the sides of the pit.
Isa 14:16 They that see thee shall narrowly look upon thee, and consider thee, saying, Is this the man that made the earth to tremble, that did shake kingdoms;
Isa 14:17 That made the world as a wilderness, and destroyed the cities thereof; that opened not the house of his prisoners?
Isa 42:6 I the LORD have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles;
Isa 42:7 To open the blind eyes, to bring out the prisoners from the prison, and them that sit in darkness out of the prison house.
2Ti 2:26 And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
The house of prisoners refers to the lost,and Satan does not let them go,unless they come to the truth.
God changed Abram to Abraham to identify his new character,and Sarai to Sarah to identify her new character,and Saul to Paul,and Peter to Cephas.
Eze 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
Lucifer was created perfect in his ways until iniquity was found in him,so God gave him a new name to identify his new character,Satan.
Eze 28:12 Son of man, take up a lamentation upon the king of Tyrus, and say unto him, Thus saith the Lord GOD; Thou sealest up the sum, full of wisdom, and perfect in beauty.
Eze 28:13 Thou hast been in Eden the garden of God; every precious stone was thy covering, the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper, the sapphire, the emerald, and the carbuncle, and gold: the workmanship of thy tabrets and of thy pipes was prepared in thee in the day that thou wast created.
Eze 28:14 Thou art the anointed cherub that covereth; and I have set thee so: thou wast upon the holy mountain of God; thou hast walked up and down in the midst of the stones of fire.
Eze 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
Eze 28:16 By the multitude of thy merchandise they have filled the midst of thee with violence, and thou hast sinned: therefore I will cast thee as profane out of the mountain of God: and I will destroy thee, O covering cherub, from the midst of the stones of fire.
Eze 28:17 Thine heart was lifted up because of thy beauty, thou hast corrupted thy wisdom by reason of thy brightness: I will cast thee to the ground, I will lay thee before kings, that they may behold thee.
This is speaking of the king of Tyrus which it is obvious it is speaking of Satan the anointed Cherub,and in Isaiah 14 Lucifer is Satan,for he is the one that influences the heathen kings of the world,and no Gentile nation did it completely right before God except Israel when she was in the truth,but if a Gentile nation acknowledged the God of Israel they still had worldly ways about them.
King Nebuchadnezzar acknowledged the God of Israel,and God gave him the kingdom,but Lucifer still influenced them becaue they believed in other gods,and the occult,and could be cruel towards other nations,but king Nebuchadnezzar is not Lucifer.
And the beast kingdom in Revelation was not fulfilled in the first century,for the Roman Empire does not lose her dominion until God puts them down,which they shall come together in the future,and pull all nations together,and become ten horns,the world split in to ten sections with a leader in each section,and shall devour the whole earth,tread it down,and break it in pieces,and the beast shall have power over all nations,kindreds,and tongues,which the Roman Empire in the first century never did.