The Namesake focused on Gogol, a boy, and the way he interacted with his family. To get a female perspective, check out this novel that focuses on a teenage girl named Dimple.
Gogol struggled with his identity, but he knew his family and felt their love. In this movie, Saroo searches for his biological family after being separated from them as a little boy.
If you're looking for a first-generation immigrant story about brothers, check out this novel about two boys whose lives are irrevocably changed when they come to America.
The Namesake is a fictional story about a man trying to reconcile his identity and his heritage. If you'd like to read a nonfiction account, check out this book.
If you want a more humorous immigrant tale, check out this book that follows Harit and Ranjana, two people who struggle to find their place in America and their own families.