Lucio sits next to 4 phonetic neighbors — Luciano, Luca, and Lucius are the closest matches by sound. Most share Lucio's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light"
"battle genius"
"strength of God"
"God has helped"
"supplanter (from Jacob/James)"
"God is gracious"
"YHWH has shown favor"
"God is gracious"
"rich friend"
"new house"
"glory-wolf; renowned warrior"
"divine power, God's power"
"famous warrior"
"new house (place name)"
"speaking good things"
"lover of God"
"glory and spear"
"loved by God"
Similar sound: These names share phonetic patterns with Lucio — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lucio.
Rhythm: Lucio is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.