Modern invented name, likely a blend of Jay and Gianni.
Jayonni is a contemporary American creation. It likely combines the popular prefix 'Jay-' with the Italian name Gianni, a diminutive of Giovanni, meaning 'God is gracious.' As a modern invention, it does not have a singular historical etymology but follows current trends in phonetic name construction.
Less common today
Jayonni isn't in the latest US Top 1000. It last peaked at #9,575 in 2018.
US births per 5-year period, 1990βpresent (SSA data).