At the moment, worthwhile Thunder Hime to bring:
SSRs: Tyr, Mammon, Raiko
SRs: Thunder Rami-Rami (limited)(for content where Dispel helps like Ult Water), Astraea (got tired of missing your Sniper Shot? Bring Astraea!)

A grand total of five. So, once Noel arrives, unless you have basically the perfect Thunder team (or just Tyr), your Thunder team will change. Things get more complicated as Thunder gets more good stuff like Awakened Brahma or the upcoming SSRs.

Oh, and I guess there's Phantom element Thor if you like gambling. And why wouldn't you like gambling? You're playing a gambling game!