What is the name of Luqman's polytheistic son, mentioned in Surat Luqman, whom he was admonishing?

Luqman's son, to whom the advice was given, was left unnamed by Allah Almighty in the Holy Quran. It is said his name was An'am or Mushkam, but knowing his name brings no worldly or otherworldly benefit. It is not appropriate to delve into such matters. Instead, one should inquire about what is beneficial and useful in matters of religion and the world. Judging him to be a polytheist is incorrect, for neither Allah Almighty nor His Messenger clarified this. The most that was mentioned is that his father warned him against polytheism, and this does not indicate that he was a polytheist.