Combination of Jae and the suffix -leen
Jaeleen is a modern American invented name. It likely combines the name Jae, which can be a variant of Jay (referring to the bird) or a diminutive of James, with the popular feminine suffix -leen, often associated with names like Kathleen or Eileen.
Less common today
Jaeleen isn't in the latest US Top 1000. It last peaked at #6,487 in 2009.
US births per 5-year period, 1990βpresent (SSA data).