Gracious
Jahnaya is a modern American creation, likely a contemporary elaboration of the name Jana or Jane. It combines the Hebrew root 'Yochanan' (meaning 'Yahweh is gracious') with a rhythmic, multi-syllabic ending popular in late 20th-century naming trends.
Less common today
Jahnaya isn't in the latest US Top 1000. It last peaked at #8,596 in 2006.
US births per 5-year period, 1990βpresent (SSA data).