Lumina sits next to 4 phonetic neighbors — Luna, Luminae, and Luminary are the closest matches by sound. Most share Lumina's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, radiance, beams of light"
"royal sky"
"light, shining"
"clearing in the hazel grove"
"noble, of noble kind"
"raven"
"creative spelling of Jolie"
"wished-for child (Evelyn connection)"
"silver one, the bright"
"melody, song, musical"
"combination of light and grace"
"gold, golden"
"precious purple gemstone (jacinth)"
"thankful; God has heard"
"pretty rose, fair rose"
"ray of light and grace"
"song, melody, air"
"variant of Bria or Brianna"
"gift of God"
"cherry tree or fruit"
"grace + God is my oath (Anna + Lisa)"
Similar sound: These names share phonetic patterns with Lumina — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lumina.
Rhythm: Lumina is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.