Lucus sits next to 4 phonetic neighbors — Lucas, Lukas, and Luke are the closest matches by sound. Most share Lucus's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, illumination"
"bright, shining, moon-like"
"son of Anders; son of the manly one"
"stream, ford"
"strong, powerful"
"playful one"
"the sky, royalty"
"traveling salesman"
"God has helped, helped by God"
"famous land, renowned in the land"
"like life force, vibrant"
"new day, new light (interpreted)"
"knight, mounted warrior"
"faithful as a dog, devoted"
"God delivers, divine rescue"
"God's beauty (Jah + beauty)"
"hollow stone, hollow hill"
"victory of the people (via Nicasen interpretation)"
"captain, governor"
"helped by God, God has supported"
"the tall one"
Similar sound: These names share phonetic patterns with Lucus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin lux origins, giving them the same cultural heritage as Lucus.
Rhythm: Lucus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.