Lux sits next to 4 phonetic neighbors — Luca, Luke, and Lax are the closest matches by sound. Most share Lux's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light"
"one who lives in a valley"
"claw of a bird of prey"
"youthful"
"diminutive of Scott"
"high stronghold, fort on the headland"
"house, home"
"warrior, defender"
"protected by Yahweh"
"praised (from Judah/Yehuda)"
"fair-haired, blonde head"
"God has healed"
"red river settlement"
"truly brave"
"rock hill, old hill"
"little fire, fiery one"
"the victorious one"
"spotted one"
"headland, promontory"
"resolute protector, strong-willed warrior"
"handsome, fair one"
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.