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"
"grace, God has been gracious"
"beautiful, handsome"
"God exalts, may God live"
"alone, solitary"
"modern American variant of Anaya"
"of noble kind"
"gift of God (if traced to Penelope's roots)"
"bright, shining"
"regular beat, musical flow"
"one who builds with stone"
"city of history and culture (as a name)"
"raven meadow"
"the heavens, royalty"
"beloved, dear"
"great, magnificent"
"victors crown"
"Gaelic speaker"
"winding valley"
"bright red cloth"
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.