Luna sits next to 3 phonetic neighbors — Lena, Layla, and Lina are the closest matches by sound. Most share Luna's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"moon"
"lion of God"
"God is gracious"
"breath of life, to breathe"
"one who hears"
"gift of birth"
"bright, shining one"
"From the Roman family name Aemilius; variant of Emily and Amelia wi..."
"bright, shining light"
"immortal (folk etymology)"
"island"
"stone of the flank"
"bringer of good news"
"flat plain"
"reddish-brown earth pigment"
"drop of the sea"
"devoted to God"
"famous, illustrious"
Similar sound: These names share phonetic patterns with Luna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Luna.
Rhythm: Luna is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.