Gracious
Jhania is a modern American invention, likely a creative elaboration of the name Jania or Jane. It follows the popular trend of adding a 'h' and a 'ia' suffix to traditional roots, ultimately tracing back to the Hebrew name Yochanan. It carries the same spiritual sentiment of divine favor found in the John family of names.
Less common today
Jhania isn't in the latest US Top 1000. It last peaked at #9,462 in 1999.
US births per 5-year period, 1990βpresent (SSA data).