Modern invented name, likely a variant of Jalen
Jayln is a contemporary American coinage, most likely a phonetic variation of Jalen. While it does not have a traditional etymology, it follows the popular trend of combining rhythmic sounds or modifying established modern classics like Jaylen or Jalin.
Less common today
Jayln isn't in the latest US Top 1000. It last peaked at #2,833 in 2004.
US births per 5-year period, 1990βpresent (SSA data).