Three of them have my very least favorite sound ever. I can't stand Daphne, Phoebe, Esme etc. I would include Hebe and Thisbe in that category too.
Ianthe is not that bad. I can tolerate it and I kind of like the look of it. I'm not sure about Tempest as a name. It's a bit strange. It has a more pleasant sound than the others but I don't know, Ianthe would probably work better as a name.
* Ellen * Astrid * Eira * August * Isidore * Emmanuel *
but she wants to be sure 'cause you know sometimes words have two meanings