Answer:
In the context of the Book of Mormon, Lehi and Ishmael are figures associated with two groups of people who are said to have traveled to the Americas. Lehi was a prophet and patriarch who led his family, including the tribes that descended from his sons, into the wilderness. Ishmael joined Lehi's group with his family.
Lehi's family is said to have consisted of two main groups, named after his sons: the Nephites (descendants of Nephi) and the Lamanites (descendants of Laman, a brother of Nephi). These two groups play a central role in the narrative of the Book of Mormon.
The tribes of Lehi, therefore, are the Nephites and Lamanites. Ishmael's descendants would be part of these broader groups, as they intermarried and became integrated into the larger societies described in the Book of Mormon.