From a quick search; Lee, Lei, Leigh, Leye
A girl I was at school with had part of her name 'Lei' and it would get pronounced either 'Lee' or 'Lie' so that's worth considering. I think 'Leye' is also quite confusing as to how it's supposed to be pronounced.
Personally, I think Leigh is the most femine spelling and looks the best, but I do like Lei although I know it confuses some people!