I like either Kinsley or Kinslee. Just naf of Kinsleigh. I suggest writing it out and seeing which you like best. Which one is more natural for you to write? It might sound weird but I'm picky about how things look in handwriting. The writing test has helped me cross quite a few names/spellings off our list
Please don't do Kinsleigh! It looks over the top, and too "trendy"! Also, sleigh is not pronounced the same way, and the familiar word really sticks out. Although it's easy to figure out quickly, all I can see are the two words "kin" and "sleigh"
Re: spelling of our baby name help (please vote)
Cute name, btw!