There has been a great deal of speculation about the symbolism in da Vinci’s The Last Supper. What is NOT one of the well-known claims about the symbolism in this painting? explain why the answer is this

Some claim that da Vinci painted his own image as Christ.

This claim is not one of the well-known claims about the symbolism in The Last Supper because there is no evidence to support it. There is no indication in da Vinci's notes or any other documentation that suggests he intended to depict himself as Christ in the painting. The focus of the painting is on the biblical scene of Jesus' last meal with his disciples before his crucifixion, rather than on da Vinci himself. Additionally, da Vinci was known for his keen observation and attention to detail, so it is unlikely that he would have included such a self-referential element in one of his most famous works without leaving any clues or documentation to support it.