Lucca sits next to 4 phonetic neighbors — Luca, Lucas, and Luke are the closest matches by sound. Most share Lucca's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bringer of light"
"land where rye grows"
"steadfast, firm"
"wealthy guardian"
"black gemstone"
"great surrounding sea"
"from the south village"
"plum tree (unrelated homophone)"
"ruler of the world"
"defender of men"
"of the Lord, belonging to God"
"right-handed, skillful"
"from the settlement by the stone"
"noble bright (adal + beraht)"
"thankful, grateful"
"superlative of magnus (great)"
"imperial title, ruler"
"son of"
"herb farm, meadow settlement"
"male, masculine"
Similar sound: These names share phonetic patterns with Lucca — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lucca.
Rhythm: Lucca is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.