Jianni sits next to 4 phonetic neighbors — Gianni, Giovanni, and Johnny 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"
"heavenly, soaring"
"lord of the rocks; from Tyre (ancient Phoenician city)"
"heather, heath plant"
"resolute protector, determined guardian"
"reddish-brown color"
"vivid, alive"
"wide island"
"white heart, blessed heart"
"prince, commander, leader"
"from the clearing"
"red-haired, auburn-haired"
"coined name with futuristic feel"
"messenger"
"conscience, heart"
"stream, ford"
"son of Anders; son of the manly one"
"blazing torch, flaming sword"
"manly, masculine (as variant of Drew/Andrew)"
"bold, narrow strait"
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.