Moana sits next to 4 phonetic neighbors — Mona, Lana, and Noa are the closest matches by sound. Most share Moana's Hawaiian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ocean, sea"
"beloved, wished-for child"
"heavenly calm, noble tranquility"
"the heavens, sky and sea"
"heavenly, of the divine sky"
"heavenly, of the sky, royal"
"from the mahogany grove"
"noble, exalted, high"
"orange tree"
"peace, wishes"
"oak tree"
"angel, divine messenger"
"heavenly child, royal garland"
"carp fish; symbol of perseverance and good luck"
Similar sound: These names share phonetic patterns with Moana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hawaiian origins, giving them the same cultural heritage as Moana.
Rhythm: Moana is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.