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"
"heavenly, belonging to the sky"
"heavenly, of the divine sky"
"heavenly calm, noble tranquility"
"calm waters"
"peace, wishes"
"open sea, freedom"
"oak tree"
"from the orange grove"
"flowing brightness, luminous"
"heavenly calm"
"calm waters, serene sky"
"heavenly child, royal garland"
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.