Trying To Make Cute Offspring

Awhile ago, I started to think about my sims and who would make cute babies, so I actually found four sims who can make cute babies. One couple are both white, has an interesting look to their kids, with purple and blue eyes mixed makes that super light brown eyes on the bottom right when you make a sim. My second couple are a Japanese descent, the man is Japanese and Sulanian, while the woman is half African and Japanese, their baby is so cute. He's quite handsome.

Has anyone else tried doing that?