Zoelle? Looks as if the N had fallen off
Noelle and someone had picked it up and put it back on, sideways.
I would prefer the established to the freshly invented, most times. And I'd certainly prefer
Noelle to Zoelle. But, I'd also prefer
Noel, as a unisex name, to
Noelle. Where I live, certainly,
Noelle is routinely pronounced noWELL, which I find unattractive.