I only have Harold/Elfie S-Ranked as of right now, but I'm working on... (Nohrian)
Femui/Suzukaze (A) = Green-haired family!
Joker/Severa (A) = Red-headed Deere!
Nyx/Owain (A) = Sorceror family!
Cyrus/Elise (A) (It was never my intention to marry off the baby sister, but the unstoppable duo just got away from me; this pair kicks a** during battles.) = Sophiscated-looking blond-haired Sophie...?
Inigo/Pieri (B) = Blue-haired Soleil!
Charlotte/Benoit (B) = Just because...?
Zero/Camilla (C-Rank) = Because I wanted a purple-haired Eponine, haha!
I'm trying to figure out who to pair Marx, Aqua, Leon, and Flannel, with. I was thinking Aqua/Flannel, Leon/Belka, and Marx/Felicia (brown-haired Siegbert would look okay), but I don't know yet... That'd give me a lot of blue-haired kids, haha!