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"
"of the sheep family, shepherd lineage"
"homeland person"
"ascent, high"
"God is gracious (short for Giovanni)"
"noble, Aryan"
"eager to emulate, striving"
"tomorrow, the future"
"one blessed by God"
"dark sea, dark one"
"protector of riches"
"from Ilium, ancient Troy"
"of the woods, sylvan"
"gift of Artemis, safe and sound"
"Yahweh is gracious"
"deliverer, liberator"
"God is gracious (Juan/John) + small, humble (Pablo/Paul)"
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.