Niccolo sits next to 4 phonetic neighbors — Nicholas, Nicolas, and Nico are the closest matches by sound. Most share Niccolo's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"victory of the people"
"divine peace, God's peace"
"worthy of praise, easy living"
"white, silver (ancient root)"
"lord, master (via Kyrie element)"
"my vision, my sight"
"love, romantic feeling"
"from the badger settlement"
"rational thought, good judgment"
"healer, physician"
"short form of Cameron or Camden"
"from the hollow farm"
"star"
"tied score requiring two consecutive wins"
"belonging to the Lord"
"elm grove, place of elms"
"strife, contest"
"speckled, or from the bridge settlement"
"son of the rock"
"one who lisps or stammers"
Similar sound: These names share phonetic patterns with Niccolo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Niccolo.
Rhythm: Niccolo is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.