What was the religion and belief of Abd al-Muttalib, and is it true that Abu Talib and Abd al-Muttalib died as disbelievers because they chose this religion?

The religion of Abd al-Muttalib was idolatry. Most scholars believe that the Prophet's ancestors, peace and blessings be upon him, including Abd al-Muttalib, died in polytheism and are among the inhabitants of the Fire, contrary to those who held the view of their faith, such as al-Suyuti.