Adyn sits next to 4 phonetic neighbors — Aidan, Aden, and Ayden are the closest matches by sound. Most share Adyn's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little fire, born of fire"
"gift of YHWH"
"dark one"
"calm lake, tranquil pool"
"thorn, sharp stone, flint"
"Irish Gaelic diminutive form"
"modern invented name"
"broad clearing, wide meadow"
"bright-headed, fair warrior"
"little blind one, the blind one"
"beauty, grace (Arabic cognate Zayn)"
"large meadow settlement"
"island"
"fame-land, renowned in the territory"
"meadowland, fallow land"
"modern creative construction"
"hand of God"
"fortune; luck (in Spanish/Italian)"
"Yahweh is God"
"modern invented name combining Ty- and -jae elements"
Similar sound: These names share phonetic patterns with Adyn — 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 Adyn.
Rhythm: Adyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.