Enya sits next to 4 phonetic neighbors — Eithne, Anya, and Enna are the closest matches by sound. Most share Enya's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"kernel, grain, seed"
"island of apples"
"champion, passionate"
"holy, sacred (possible folk etymology connection)"
"fair and slender girl"
"precious gem"
"white warrior"
"resolute protection, helmet of will"
"mirth, merriment, great joy"
"the hazel tree"
"rye clearing, meadow"
"descendant of the dark challenger"
"little dark-haired one"
"mead (alcoholic honey drink), intoxicating one"
"dark one, little dark one"
"hill"
"descendant of the fire god"
Similar sound: These names share phonetic patterns with Enya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish origins, giving them the same cultural heritage as Enya.
Rhythm: Enya is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.