When God created the millions of Angels He did so all at once, including all the three levels, Angels, Seraphim and the Cherubim.But with Lucifer he was created as entire different being, perfect in wisdom and beauty. The fall of Lucifer to Satan was cataphoric not only to the angelic realm but also had consequences to God’s next creation Man.
God’s Word regarding the fall – Lucifer was the anoinnted Cherubim the one who guided all the other Angels in regard to worship but Lucifer’s wisdom and beauty were corrupted through pride, once his wisdom was gone he mistakenly thought he could be like God. However God is not going to share His glory with a created being :
You are the full measure and pattern of exactness [giving the finishing touch to all that constitutes completeness], full of wisdom and perfect in beauty.
13 You were in [a]Eden, the garden of God; every precious stone was your covering, the carnelian, topaz, jasper, chrysolite, beryl, onyx, sapphire, carbuncle, and emerald; and your settings and your sockets and engravings were wrought in gold. On the day that you were created they were prepared.
14 You were the anointed cherub that covers with overshadowing [wings], and I set you so. You were upon the holy mountain of God; you walked up and down in the midst of the stones of fire [like the paved work of gleaming sapphire stone upon which the God of Israel walked on Mount Sinai].
15 You were blameless in your ways from the day you were created until iniquity and guilt were found in you.
16 Through the abundance of your commerce you were filled with lawlessness and violence, and you sinned; therefore I cast you out as a profane thing from the mountain of God and the guardian cherub drove you out from the midst of the stones of fire.
17 Your heart was proud and lifted up because of your beauty; you corrupted your wisdom for the sake of your splendor. I cast you to the ground; I lay you before kings, that they might gaze at you
Once Satan aka the devil was restricted to the earth, his main goal was to get man to fall and be in the same situation as himself, which he managed to do. However God had a plan to redeem man., this was to show off His love, grace, and mercy forever more. Angels even try to understand this truth especially since the devil and his fallen angels are lost forever. The five “i will’s” had shown that he had desired to takeover from God as the possesor of heaven and earth, at this point God judged him and his followers which happened to be a THIRD OF THE ANGELS, the ones directly under his authority, “trading” meant that he had caused a revolt among some of the angels who believed him when he defamed God. These 2 things God hates , this is pride and someone poisoning other people’s minds with gossip etc. Once the devil and his angels had been restricted to earth and its atmosphere, satan had lost his beauty and wisdom and his position of authority over the throne of God. God had then given this position to two high ranking angels not just one. God had judged the earth under satan’s authority and burnt it and flooded it destroying inhabitants maybe previous creations ( unsure of this but may account for the demonic culture, spirits without a body), God hadn’t created hell at this stage so the demonic spirits roamed on the earth ….conjecture in regard to demonic spirits.