Gracious
Joniyah is a modern American invention, likely created by blending the biblical name John or Joan with the popular suffix -iyah. It shares the etymological roots of the Hebrew name Yochanan, signifying divine favor and grace.
Less common today
Joniyah isn't in the latest US Top 1000. It last peaked at #6,104 in 2008.
US births per 5-year period, 1990βpresent (SSA data).