Where is the actual evidence for your speculation? The Gospels are known forgeries and are not eyewitness accounts.
There is NO evidence from antiquity at all that there were people who worshiped a man called Jesus of Nazareth as a God since the time of Pilate.
There is no known culture or tradition where Jews or non-Jews worshiped a man called Jesus as a God in the 1st century.
No anthropological study have shown that Jews in Galilee or Jerusalem or non-Jews worshiped a man called Jesus of Nazareth as a God after he was crucified.
You are speaking of something rather different than I was and assuming, again, that I was making a case for the proof of Jesus' existence.
When I was referring to the early aquisition of the religion, it was in remark to Belz' inquiry of Christianity which was asking why any non-Jewish group would bother to adopt Jewish-like ideological baggage.
I was explaining that Rome actually had a habit of doing this regularly with many religions, and that mysticism and messianic followings were common of the era as incorporated religions within the Roman empire.
The evidence for this is rather widely known and well documented, such as Serapis or mysticism "magi" religions, or several of the "Christian" (anointed person) followings.
What we know as Christianity, as you yourself have noted, was not the inherently referred to term early on in Rome by the term, "Christianity", and the term instead referred to any following which greatly revered some believed human being as specially anointed, and these "leaders" (real or contrived) were typically accredited with theological commentary on social politics and justifications.
These groups were of issue for Rome in that Rome only permitted one human being to be venerated in such capacity, and that was the Emperor.
There are many noted messianic claims, some more surprising than others, but the frequency was rather large during the 1st c BCE to 1st c CE time period, and continued onward a bit into the 2nd c CE.
"Jesus" became the most widely known over time, but at first, we do not read of Rome so concisely knowing of the Jesus cult, but we do read of them knowing "Christians", but (again, as you noted) this term was being applied for any such group similar.
If some small group was following the legend of Simon of Peraea, Athronges, or Menahem ben Judah, for example, they would be labelled as Christian just the same as some "Jesus" cult, as they were all "messiahs", or "anointed persons".
Oddly, you are arguing against me here when my post to Belz actually could be used to support your position, though you seemed to take it to counter your position for some reason.
You are merely taking the Gospels at FACE VALUE.
May I remind you that the Gospels are really forgeries or falsely attributed to unknown authors of unknown date of authorship whose accounts are not eyewitness reports and filled with historical problems, discrepancies and events which did not happen.
Just the mere non-historical contents of the Gospels should be a read flag that they should NOT be taken at Face Value.
The Gospels were probably written 80 years after the time of Tiberius or probably no earlier than c 115 CE.
Again, that is not a "face value" reading of the texts.
Determining the cultural values by what way they frame their claims, which symbols they focus on, and the grammatical fashion in which the texts are written in a literary form is not a "face value" reading.
A "face value" reading would be if the gospel of John read, "this texts was written in Asia Minor by those in Asia Minor who believe the prophecies of Daniel and hold Jesus to be the divine son of our god and whom champions our vindication in the coming apocalypse", and then me stating, "Hey, this text was written in Asian Minor by those in Asia Minor who believe the prophecies of Daniel and hold Jesus to be the divine son of their god and whom champions their vindication in a coming apocalypse they believed was going to occur".
That's not what I was referring to, nor what I had done, so no; I was not, taking the text on face value.
Further, again, the point of that description actually would help support a mythical Jesus position, but you somehow read the concept of differing cultures viewing this Jesus figure differently, and applying their cultural values into a fusion with the legends of Jesus as some sort of argument that I wasn't making for the support of proof that Jesus existed.