Midrasch zu Bereschit 30:13

“One is my faultless dove, one to her mother, pure to the one who bore her. Girls see her and laud her; queens and concubines, and praise her” (Song of Songs 6:9).
“One is my faultless dove”—“one,” this is Abraham, as it is stated: “Abraham was one” (Ezekiel 33:24). “One to her mother,” this is Isaac, who was an only child to his mother. “Pure [bara] to the one who bore her,” this is Jacob our patriarch, of whom it was clear [barur] to the one who bore him that he was entirely righteous. “Girls see her and laud her,” these are the tribes, as it is stated: “The news was heard in Pharaoh's palace, saying, "Joseph's brothers have come" (Genesis 45:16). Alternatively, “girls see her and laud her [vayashruha],” this is Leah, as it is stated: “In my happiness, as women will be happy for me [ishruni]” (Genesis 30:13).
“Queens and concubines, and praise her,” this is Joseph, as it is stated: “Pharaoh said to his servants: Can we find someone like this?” (Genesis 41:38). If we walk from one end of the world to the other we will not find someone like this, as it is stated: “After God has disclosed all this to you, [there is no one as insightful and wise as you]” (Genesis 41:39).

As for Asher, his bread shall be fat (Gen. 49:20). That is, his daughters shall be beautiful, as it is said: For my daughters make me happy (Gen. 30:13). Blessed be Asher above sons, let him be favored of his brethren (Deut. 33:24) because of his daughters.