Aysen sits next to 3 phonetic neighbors — Aydan, Aiden, and Aydin are the closest matches by sound. Most share Aysen's Turkish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joyful as the moon"
"prince, noble ruler"
"recognition, knowing"
"the pure, the selected"
"eloquent, articulate (from Bayan)"
"my God is Yahweh"
"moonlit ruler, bright as the moon"
"young bustard (a bird)"
"good, benevolent"
"high kin, chosen son"
"wealth, prosperity"
"one who learns, student"
"universe, world, cosmos"
"maiden, virgin"
Similar sound: These names share phonetic patterns with Aysen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Turkish origins, giving them the same cultural heritage as Aysen.
Rhythm: Aysen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.