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"
"people of Ciar"
"goddess Savitri, divine solar figure"
"joyful singer"
"night, dark beauty"
"origin, beginning, birth"
"to live long"
"harmony, love"
"my father is Yahweh"
"complete divine favor"
"of the moon, moon-like"
"dry (referring to the plant's habitat)"
"of the race of women"
"rare, elegant material"
"helper, assistant"
"hail, greetings"
"pleasantness, beauty"
"ugly head (literal Old Irish)"
"James spelled backwards; heard by God"
"dew of heaven, my dew"
"bright, shining light"
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.