Eilani sits next to 4 phonetic neighbors — Leilani, Eileen, and Elani are the closest matches by sound. Most share Eilani's Hawaiian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"heaven, sky"
"eternal, forever"
"the sweet fragrance, God is gracious"
"sea and sky"
"exalted, sublime"
"heavenly, sky, royal"
"my, mine (beloved possession)"
"heavenly Mary, beloved sky"
"sea, ocean"
"royal child of heaven"
Similar sound: These names share phonetic patterns with Eilani — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hawaiian origins, giving them the same cultural heritage as Eilani.
Rhythm: Eilani is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.