Gracious
Jayni is a modern diminutive or variant of Jane, which ultimately derives from the Hebrew name Yochanan. It carries the same traditional meaning of divine favor but with a contemporary, playful spelling. While rare, it follows the trend of adding an 'i' ending to classic names for a softer, more unique feel.
Less common today
Jayni isn't in the latest US Top 1000. It last peaked at #3,350 in 1997.
US births per 5-year period, 1990βpresent (SSA data).