Moon sits next to 3 phonetic neighbors — June, Lune, and Dune are the closest matches by sound. Most share Moon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"the moon; lunar"
"immense quantity, boundless"
"descendant of Bradan (salmon)"
"distinguished ruler"
"bridge town"
"wise protector, counselor-guardian"
"praised"
"son of Daw (David), beloved son"
"modern invented name"
"olive tree"
"invented modern variant"
"great one"
"Yahweh has heard"
"storehouse of precious things"
"to heal, to cure"
"manifestation of God, Epiphany"
"narrow strait, channel"
"the number seven"
"Yahweh is God"
"tournament fighter, gladiator"
Similar sound: These names share phonetic patterns with Moon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Moon.
Rhythm: Moon is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.