Gracious
Keionna is a modern American creation, likely a feminine elaboration of Keion or Ian. It blends the 'Kei' prefix with the classic 'Anna' suffix, ultimately tracing back to the Hebrew name Yochanan, meaning 'God is gracious'.
Less common today
Keionna isn't in the latest US Top 1000. It last peaked at #3,674 in 2001.
US births per 5-year period, 1990βpresent (SSA data).