Luccas sits next to 4 phonetic neighbors — Lucas, Lukas, and Luca are the closest matches by sound. Most share Luccas's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, illumination"
"relating to the Passover lamb"
"God supports, Yahweh supports"
"of the Claudian clan"
"of the hunt, belonging to Artemis"
"Yahweh shows favor"
"from the forest, woodland"
"God sees, God is my strength"
"fortune guardian"
"victory of the people"
"sacred name"
"crossroads, intersection"
"industrious, hardworking, rival"
"glory of Rome"
"lord of the border territories"
"lion-like"
"of the sheep family, shepherd lineage"
"of the morning, daybreak"
"God is gracious"
"consecrated, blessed by augury"
Similar sound: These names share phonetic patterns with Luccas — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Luccas.
Rhythm: Luccas is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.