Which generally overlooked townie makes pretty children?

Diego does make some cute kids but only if they don't inherit his mouth.
Some other potentials are: Luna Villarreal, Morgan Fyres and surprisingly enough, Malcolm Landgraab, though I change his hair colour from that cheesey yellow to match his dad. Johnny Landgraab also makes decent kids. Cassandra Goth, with a little makeup and different hair is quite the looker and in my game, she married one of my main sims and they had good looking kids.