Kaiyah sits next to 4 phonetic neighbors — Kaia, Kayla, and Maya are the closest matches by sound. Most share Kaiyah's Hawaiian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sea, ocean"
"as beautiful as the moon"
"to ascend, rise, be exalted"
"Ireland"
"thorny tree, point"
"island (from Isla)"
"sacred river"
"slender and fair"
"bright meadow (Z + leigh/leah)"
"fellow countrymen"
"of noble kind"
"beautiful meadow (speculative Celtic-influenced interpretation)"
"air, atmosphere, breeze"
"fair champion"
"daughter of the sun"
"divine strength (from Osbourne)"
"beloved"
"one who plays music"
"illustrious, renowned"
"light, radiance"
"brave and powerful work"
Similar sound: These names share phonetic patterns with Kaiyah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hawaiian origins, giving them the same cultural heritage as Kaiyah.
Rhythm: Kaiyah is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.