Zailyn sits next to 4 phonetic neighbors — Jaylen, Kaylin, and Zalen are the closest matches by sound. Most share Zailyn's Arabic (via Zaid prefix)-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"growth, abundance"
"one thousand million, immense wealth"
"who is like God"
"from the place of the sturgeon"
"night watchman"
"Yahweh has heard"
"copper-tin alloy; warm reddish-brown metal"
"gift of God (via Carmelo root)"
"fortune; luck (in Spanish/Italian)"
"wooded dune area, hare meadow"
"the hidden one, lady"
"fiery one"
"fiery one"
"God will strengthen"
"spring of water, water gift"
"he who holds firm to good"
"talon-like, sharp and strong"
"gift of God"
"modern invented name, no established meaning"
"hand of God"
Similar sound: These names share phonetic patterns with Zailyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic (via Zaid prefix) origins, giving them the same cultural heritage as Zailyn.
Rhythm: Zailyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.