Shea looks best to me. I don't actually know which one is most authentic, but
Shea has that feel to me.
Shae looks mixed up, like when I would get confused with
Michael and
Micheal as a kid. And
Shay looks oversimplified phonetically.
Claire. But just because I know one and I've never known a
Clare.
Madeline - MAD-uh-line
Madeleine - MAD-uh-linn
Rosaline - ROSE-uh-line
Caroline - CAR-uh-line
Emmeline - EMM-uh-line
I think all of those spelling could be pronounced line or lynn. If I saw any of those names, I would ask pronunciation, not assum pronunciation.