The lives of Jacob and Leah and Rachel are fascinating because we are blinded by Courtly Love when we read their story.
Leah is not pretty, but she is a virtuous wife. She uses everything her power to get Jacob’s attention, and to serve him. She produced the line of priests in Levi and the line of kings in Judah, through which came the Christ. She is jealous of Jacob and his affections even though she wis hated by Jacob. There is no mention of Leah causing Jacob any grief, or reproaching him for anything. Leah just wants to be pleasing to Jacob and the Lord.
Rachel is beautiful. That is her one virtue. Otherwise: Rachel is a complainer and will harass Jacob. She steals her father’s false idols and then hides them under her vagina while feigning menstruation. She’s fickle and lets her father marry Leah to her betrothed (under subterfuge) without complaint, and is fine for Leah to sleep with Jacob right up until Leah is honored above her because of Leah’s children. Rachel wants children not so that Jacob will love her, but because she is jealous of her sister (that was probably the first time in her life for that experience) AND she blames Jacob for her barrenness.
The difference in character is stark when you compare what Leah and Rachel uttered when they named their children. Leah is joyful, and she praises Jacob and the Lord. Rachel complains and loves herself. The exception to Rachel’s pattern of selfishness is Joseph, who goes on to save the people of Israel.
The Sons of Leah (including through the servant Zilpah)
- Reuben: “Because the Lord has looked upon my affliction; for now my husband will love me.”
- Simeon: “Because the Lord has heard that I am hated, he has given me this son also.”
- Levi: “Now this time my husband will be attached to me, because I have borne him three sons.”
- Judah: “This time I will praise the Lord.”
- Gad: “Good fortune has come!”
- Asher: “Happy am I! For women have called me happy.”
- Issachar: “God has given me my wages because I gave my servant to my husband.”
- Zebulun: “God has endowed me with a good endowment; now my husband will honor me, because I have borne him six sons.”
The Sons of Rachel (including through the servant Bilhah)
- Dan: “God has judged me, and has also heard my voice and given me a son.”
- Naphtali: “With mighty wrestlings I have wrestled with my sister and have prevailed.”
- Joseph: “God has taken away my reproach.”
- Ben-oni: “son of my sorrow”, or “son of my strength”. 
If you read about Jacob Rachel and Leah and see an aspirational love story: I pity you.
Repurposed from a comment at Dalrock’s.
 Jacob changes it to Benjamin: “son of the right hand”.