.
>> “ There is no scriptural attestation to any different name.” <<
That is complete nonsense. Yeshua is the name as shown by the original Hebrew of Matthew (all lines thereof).
He didn’t go to any hellenistic Jews, because there weren’t any. You need to study the Maccabees to get all the mythology out of your system.
No one preached ritual as a means of salvation until the catholic church was created in the 4th century. The OT writings are even clearer than the NT as to the need for the grace of YHVH to be saved. Even the Pharisees knew that their Takanot and Ma’assim could not bring salvation.
.
You’re denying the existence of the whole Pharisee-hypocrite-works righteousness dynamic.
That sure says a lot about you. That fault is a world-old fault.