Flora >
Cora >
Nora.
I've liked
Flora for a very long time, and switch between preferring it and
Florence. I like the meaning, and it sounds peaceful, pleasant, and clement.
I don't prefer any of the other names you listed to
Flora.
From most to least favourite:
FloraCora: perhaps not dramatic as my beloved
Persephone, but certainly more usable. The sound reminds me of the French cœur (heart) as well.
Zora: lovely sound and meaning. Bonus points for being Slavic.
Nora: I prefer both
Eleanor and
Honora to
Nora.
Thora: rather clumsy and unattractive, but I much prefer it on a girl to
Thor on a boy.
Dora: I prefer
Dorothy,
Theodora, or
Isidora.
Lora: reminds me of the parrot.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080