It seems that your DH seems to prefer old-school names. So maybe starting from a search say, from the 1920s-1950s of names that might be nice for both of you.

Some that I can think of could include:

Rose (classic)
Mabel (dd1 goes to kinder with a Mabel and it really works! i was surprised...)
Lyla
Laura
Audrey
Vera
Stella
Helena
Anita
Penny

I truly wish you guys luck! DH and I had many a fraught moment this time coming up with a name...was so relieved when we came to an agreement lol.