Gracious
Janaia is a modern American elaboration of Jane or Jana, ultimately derived from the Hebrew name Yochanan. It combines the traditional roots of 'God is gracious' with a rhythmic, contemporary suffix common in late 20th-century naming trends.
Less common today
Janaia isn't in the latest US Top 1000. It last peaked at #6,000 in 2002.
US births per 5-year period, 1990βpresent (SSA data).