Nico sits next to 4 phonetic neighbors — Nicco, Niko, and Mico are the closest matches by sound. Most share Nico's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"victory of the people"
"cloth walker, one who treads cloth"
"angel; messenger of God"
"little saint"
"who is like God?"
"supplanter"
"from Wells, Somerset"
"occupational name for an archer or bowman"
"fiery, warm"
"bright, shining castle"
"advice, counsel"
"strong man, manly"
"powerful, brave king"
"of Mars, warrior"
"gift of God"
"Yahweh is God"
"letter J, initial name"
"son of Carsun, dweller near the marsh"
"wayside land, roadside settlement"
Similar sound: These names share phonetic patterns with Nico — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Nico.
Rhythm: Nico is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.