Luc sits next to 4 phonetic neighbors — Luke, Luck, and Luca are the closest matches by sound. Most share Luc's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, luminous"
"my God"
"short form of Walter"
"little rock, harmony"
"victorious people"
"brown one, the brown bear"
"the white one, fair"
"horse keeper, stable master"
"son of him who abounds in furrows"
"the end, conclusion of a journey"
"gift of Yahweh"
"home ruler"
"wise counsel"
"God is gracious"
"bright spirit, shining mind"
"warrior"
"war, strife"
Similar sound: These names share phonetic patterns with Luc — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Luc.
Rhythm: Luc is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.