The enchantress is pretty newish. The casting is a mix between AU prepare but cast as many of each as you want (the Divine part) and UA SP but fatiguing (the Arcane part, like the Ecomancer does for everything). But admittedly its Sidhe.
As for Nymphs with Nature magic, I'd imagine you want the Swanmay or the Nymph, as you predicted.
Nymphs are more about special abilities and the Nature magic, kind of like playing a Monster Manual Nymph, but better and more fun and with different abilities. You've seen the class; you know what they do (also, Aurai don't get the wings unless they level in Nymph, although I suppose that the Swanform of Swanmay makes that somewhat moot).
Swanmays are somewhat based on the old Swanmay race, sort of. They are good at fighting, have nature magic, can turn into swans, and they love animals, with animal friends and animal summoning spontaneity.
