aqwsed12345 :
Earnest’s argument conflates heretical misuses of "God" with the
orthodox affirmation of Jesus’ deity.
To speak of 'heretical' and 'orthodox' in the first three centuries is meaningless as what was "orthodox" differed from group to group. I intend to write a post showing the diversity of early Christianity but, in the meantime, would refer you to Bart Ehrman's "The Orthodox Corruption of Scripture", Edward Gibbon's "The History of the Decline and Fall of the Roman Empire" (chapters 15 & 16), Adolf von Harnack's "Mission and Expansion of Christianity in the First Three Centuries", or Harmut Leppin's "The Early Christians".
While I think your summary of the Ebionites through the lens of their critics is fairly accurate, your view of what you term orthodoxy is obviously partisan.
One other point I would like to put to rest as you have not responded to my post enquiring about "the majority Latin manuscripts" which include et deum (Lord and God Jesus Christ) in the twelfth chapter of Polycarp's Letter to the Philippians, is that in fact the minority include et deum ("and God"), the majority omit it.