Luna and Nova are extremely popular near me (NW).
It tends to be unfashionable names that are more unusual at the moment. Oddly Margaret and Mary are quite popular too. But Sarah, Caroline, Winifred, Susanna, Gabrielle, Nicole, Sally, Laura, Lauren etc are all names I’ve only heard once recently and they are all babies or toddlers.
Popular at the moment Audrey, Evelyn, Isla, Freya, Evie/Eva, Ava, Aria, Arya, Lara, Willow, Thea etc.
If you want to sound on trend but less likely to have a duplicate in class - Thora, Cora, Cara, Laurel, Hazel, Thalia, Dahlia, Natalia, Alma, Honor, Esther.
Verity is nice. If you like Polly how about Sally or Molly? Haven’t come across a little Molly for years. Same for Ruby, Scarlett etc.