Jianni sits next to 4 phonetic neighbors — Gianni, Jiani, and Jeanne are the closest matches by sound. Most share Jianni's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"brave in battle"
"rain, refreshment"
"high meadow or woodland clearing"
"gentle, delicate"
"favored, blessed"
"northeast wind"
"each of the two (disputed origin)"
"sky, heaven"
"night creature, storm demon"
"lake, body of still water"
"offering, awakening"
"free, independent"
"Ireland; from the island of Ireland"
"absorbed in God"
"black, dark-colored"
"industrious, hardworking"
"variant of Kayla, meaning 'keeper of the keys' or 'pure'"
"victory, honor"
"God is my strength, my God is high"
"pledged to God (via Susannah)"
Similar sound: These names share phonetic patterns with Jianni — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Italian origins, giving them the same cultural heritage as Jianni.
Rhythm: Jianni is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.