Keylin sits next to 3 phonetic neighbors — Kaelyn, Kaylin, and Kailyn are the closest matches by sound. Most share Keylin's American invented-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joyful, beautiful"
"little bird"
"noble meadow (from Old English)"
"branch, tendril of a grapevine"
"from the mahogany grove"
"brave as a wild boar, boar-strength"
"beautiful voice"
"bright, shining one"
"pure, slender"
"from Nimes (city in France)"
"sports stick, implement"
"night, dark beauty"
"twin, a twin"
"devoted to God"
"light, splendor, divine grace"
"firm, immovable"
"graceful, favored"
"variant of Ariana/Arianna"
"the moon"
"stone worker, bricklayer"
Similar sound: These names share phonetic patterns with Keylin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American invented origins, giving them the same cultural heritage as Keylin.
Rhythm: Keylin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.