Anakin- Ani, or babe.

Finn- Handsome.

Han- Most of the time it's scoundrel, but when he's not being a pain in the butt, he's called baby.

Hux- Definitely baby. Because he acts like one most of the time. And Carrot. Because of his orange hair.

Kylo- You call him Ben when you get angry at him. But however, you usually call him dear.

Luke- You call him honey. Because of his hair.

Obi-Wan- You return the favor of saying darling as well.

Poe- you call him Babe, because he asked you do so.