Kaylan sits next to 3 phonetic neighbors — Kayla, Kaitlyn, and Keilan are the closest matches by sound. Most share Kaylan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"slender, narrow"
"western meadow, west field"
"industrious, hardworking (associated meaning)"
"shelter, harbinger"
"gracious gift"
"divine sky beauty"
"combination of Jay and Lynn"
"moonlight"
"foreigner, stranger"
"female heir, inheritor"
"graceful devotion"
"gift of God"
"invented modern name with no historical etymology"
"harmony, love"
"from the hollow"
"elf ruler, wise counselor"
"divine favor, gift from God"
"the ray of light"
"honest, truthful"
"smooth stream"
Similar sound: These names share phonetic patterns with Kaylan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic caol origins, giving them the same cultural heritage as Kaylan.
Rhythm: Kaylan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.