But, there is another class of explanations which include the concept of syncretism:
Syncretism is the merging or assimilation of several mythologies or religions, a process well known by anthropologists.
https://www.britannica.com/topic/Native … cal-change
Syncretism is definitely prevalent in world religions. As a matter of fact, practically all existing world religions either mention or have a modified version of Jesus Christ in it. So, getting back to the influence of Jesus, it’s interesting that Jesus Christ even has influenced the major world religions.
Jesus in Hinduism:
“Looking at these criteria Jesus measures up as a Sadhu, a holy man. He preached a universal message, love of God and love of brother, which was beyond any sectarianism or selfishness. Jesus was one of those people who appealed from heart to heart, and that’s what makes him such a good Hindu Saint.”
https://www.bbc.co.uk/religion/religion … us_1.shtml
Jesus in Islam:
“In Islam,ʿĪsā ibn Maryam (Arabic: عِيسَى ٱبْنُ مَرْيَمَ, lit. ’Jesus, son of Mary’), is the penultimate prophet and messenger of God (Allah) and the Messiah, who was sent to guide the Children of Israel with a revelation: Injīl (Arabic for “gospel”).”
Jesus in Buddhism, Taoism:
“The Jesus Sutras say that Jesus ‘put on’ the five Skandhas, to save all living beings from Samsara, the endless repetition of birth, life and death.”
https://www.thehistoryquarter.com/post/ … ristianity
Jesus in Baha’i:
“As to the position of Christianity, let it be stated without any hesitation or equivocation that its divine origin is unconditionally acknowledged, that the Sonship and Divinity of Jesus Christ are fearlessly asserted, that the divine inspiration of the Gospel is fully recognized, that the reality of the mystery of the Immaculacy of the Virgin Mary is confessed, and the primacy of Peter, the Prince of the Apostles, is upheld and defended.”
You can even say Jesus has been highly influential with New Atheism.