Grace Lees share some things, but not all.
Before her trip, Grace Lee positions herself in opposition to a mass of indistinguishable Grace Lees. She sets out looking for an explanation of why they seem so similar, and to figure out if they really are, or what they have in common. She ends up showing us segments of the story of what it means to be an Asian American woman.
Director Grace Lee doesn't show us a sea of Grace Lees that are all the same, but she does bring them together as tellers of one larger narrative. They all struggle with the same stereotypes and with similar pressures from their peers, culture, and family. But the director Grace Lee makes a departure from old models of the common experience of women (such as the one seen in Searching for Angela Shelton), by highlighting individuality and difference within the female Asian American experience.
What she brings back, I suppose, is a sense community with other Asian American women, and also a renewed confidence in the individuality of these women and in the ability to reject the stereotype.