This hyper-analysis, overinterpretation of what clearly began as metaphor or OT parablelike narrative will never produce a universally satisfying conclusion. It can't because it is all detached from empirical evidence. We begin with the clever introduction of an agent into older theophanic narratives because editors understood theology slightly different. Then nearly immediately it is melded with Middle Platonic concepts of a demiurge as emanation of the Principle One. Then these emanations grew in detail and anthropomorphic descriptions to become angels, demons and Logos etc. Within a certain branch of Judaism many of these rose and congealed to become a separate entity.
Then either
1. a person came along that self-identified as this entity,
2.was posthumously associated with this entity or
3. the entity was later cast as a person through euhemerization/historicization.
Whichever of these three you see best fits the evidence, the concept and figure of Christ/Logos is the product of centuries of theological elaboration.