Gracious
Quaniyah is a modern American creation, likely formed by combining the popular 'Qua-' prefix with the name Aniyah. Aniyah itself is a variant of the Hebrew name Hannah, which means 'grace' or 'God has favored me'.
Less common today
Quaniyah isn't in the latest US Top 1000. It last peaked at #9,804 in 2009.
US births per 5-year period, 1990βpresent (SSA data).