They're pretty bad. My gf teaches a Siobhan, not pronounced 'Shivorn' but actually see-obe-han. Mia pronouced Maya. She also has a Con, a Kay-Cee, Jedi (with older sibling Levi), Saul, Jaykub and Kai spelled just Ki. Jazmin is another now that I think of it. I work with a Chelsie.
What is wrong with Mia, Levi or Saul?