Markan priority is the scholarly consensus.

You wrote:

<<The Sower's Sevens number patterns suggest the four books had a single provenance at some point in time,...>>

That is certainly a singular view.

You wrote:

<<Jesus (if he existed) was a first-century Jew and did not think of himself as a 'Bridegroom' (term per Pagan tradition), nor as a human sacrifice.>>

You're not confident Jesus even existed, yet you know his self-identity?