I have read it. Got two degrees in Biblical Theology, which you apparently don't have.
I don't know of even one scholar - liberal or conservative, who actually think the Gospels portray five distinct, different Jesuses. At best they might portray Jesus as a Son of Man (who is divine - Daniel 7:13-14), Jesus as a Savior, Jesus as a healer and teacher, and Jesus as the divine God. Those aren't four of five Jesuses, but one multi-faceted individual.
The first Jesus is Paul's (50s CE). He pre-exists in Heaven with God, made the material world, and mediates between that world and God. The Father is God and the Son is Lord. That is, he's very similar to gnosticism's demiurge. The little that Paul gives about his earthly life says he was born of an unnamed woman, and was descended from David; was 'handed over' to 'the archons' for reasons never mentioned, who crucify him for reasons never mentioned.
The second is Mark's (c, 75 CE). He doesn't pre-exist in heaven with God. He's an ordinary Jewish citizen, born of ordinary unnamed Jewish parents, without annunciations or moving stars, is not descended from David, and doesn't become the son of God until adopted by God when baptized by JtB on the model of Psalm 2:7 as affirmed by Acts 13:33. He preaches that the Kingdom will be established in the lifetime of his hearers. He's a defeated, woeful, abandoned figure at his crucifixion.
The third is Matthew's (80s CE). He doesn't pre-exist in heaven with God. He's the genetic son of God, born of divine insemination, in the manner of Greek tradition. Matthew's author associates him, impossibly, with Isaiah 7:14. An angel reassures the cuckolded husband of Mary. Jesus is descended from David (shown by a fake genealogy). The wise men, the flight into Egypt, and the murderous Herod are all brought into the story. An excuse is invented to explain why JtB baptizes the already-son of God. Jesus preaches the imminence of the Kingdom. He says he isn't God. On the cross he feels foresaken. Dead saints walk in the streets of Jerusalem.
The fourth is Luke's (80s CE), and Matthew's and Luke's Jesuses are the closest to a pair in the five. In Luke, Jesus doesn't pre-exist in heaven. Mary, still a virgin, is warned in advance f her divine insemination and the birth of Jesus as son of God. Jesus is descended from David (shown by another fake genealogy). An unhistoric story is devised to have Jesus born in Bethlehem with angels and shepherds. JtB is now the foreteller of the coming Jesus, but baptizes him without explanation. Jesus preaches the imminence of the Kingdom. He says he isn't God. To and on the cross, Jesus is much cooler, doesn't despair, but commends his spirit to God.
The fifth is John's (c. 100 CE). Gnostic like Paul's; he pre-exists in Heaven, made the material world, and mediates between it and God. He 'became flesh' without further details, though Mary is his mother. Written around 100 CE, he discreetly omits mention of the imminence of the Kingdom. He says he's not God. The Jews are cast as the enemy. On the cross he's not a victim but the master of ceremonies.
So even just scratching the surface like this, five Jesuses, five Christologies, with Matthew, Luke and John each improving on Mark as their respective authors prefer.
Did Jesus pre-exist with God? Yes 2, No 3.
Was Jesus divinely conceived? Yes 2, No 1, abstain 2.
Was Jesus descended from David? Yes 4, No 1
Will Jesus (or else 'the Son of Man') bring in the Kingdom in the life of Jesus' hearers? Yes 3, Abstain 2.
Is Jesus God? Yes 0 No 5.
And so on.