Lux sits next to 3 phonetic neighbors — Luxe, Luce, and Luz are the closest matches by sound. Most share Lux's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light"
"free woman, feminine form of Charles"
"graceful, unique"
"reborn clearing"
"from Arcy (place in Normandy)"
"modern invented name"
"God is my strength"
"rain, divine blessing"
"cherry tree flower"
"priceless, praiseworthy"
"whole, beloved"
"trade wind"
"modern coined variant of Jane"
"work power, vigor and rule"
"from India, land of the Indus"
"golden"
"lord, master (feminine)"
"flowing water"
"joy, delight, happiness"
"from Wales, land of compatriots"
Similar sound: These names share phonetic patterns with Lux — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lux.
Rhythm: Lux is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.