Gracious
Janyia is a modern American invention, likely created as a rhythmic variation of Jane or Janaiya. It combines the classic root meaning 'God is gracious' with a contemporary, melodic suffix popular in African American naming traditions.
Less common today
Janyia isn't in the latest US Top 1000. It last peaked at #2,228 in 2006.
US births per 5-year period, 1990βpresent (SSA data).