Pure and grace
A modern American compound name combining Kayla and Ann. Kayla is often associated with the Greek word for pure or the Hebrew for crown of laurel, while Ann is a classic name derived from the Hebrew Hannah, meaning grace.
Less common today
Kaylaann isn't in the latest US Top 1000. It last peaked at #5,921 in 1995.
US births per 5-year period, 1990βpresent (SSA data).