Genesis 35:24 states that the only two sons of Rachel were Joseph and Benjamin:
The sons of Rachel were Joseph and Benjamin.
Genesis 35:16-19 makes it clear that Rachel died in Childbirth.
They traveled on from Bethel, and when Ephrath was still some distance away, Rachel went into labor—and her labor was hard. When her labor was at its hardest, the midwife said to her, “Don’t be afraid, for you are having another son.” With her dying breath, she named him Ben Oni. But his father called him Benjamin instead. 19 So Rachel died and was buried on the way to Ephrath (that is, Bethlehem).
Later, in Genesis 37:9-10, the author states
Then he had another dream, and told it to his brothers. “Look,” he said. “I had another dream. The sun, the moon, and eleven stars were bowing down to me.” When he told his father and his brothers, his father rebuked him, saying, “What is this dream that you had? Will I, your mother, and your brothers really come and bow down to you?”
It sounds like the sun and moon are Jacob and his wife and the 11 stars are his 11 brothers. But if Rachel died in childbirth before the brothers meet Joseph in Egypt, how could Rachel be construed to be bowing to Joseph? How and when was this prophetic dream fulfilled by/through Joseph's mother?