Gracious
A modern American creation, Jahniyah is a rhythmic elaboration of the name Janiyah. It likely combines the 'Jah' prefix, referencing a name for God, with the popular 'niyah' suffix found in names like Aaliyah.
Less common today
Jahniyah isn't in the latest US Top 1000. It last peaked at #5,100 in 2010.
US births per 5-year period, 1990βpresent (SSA data).