Kayleigh sits next to 4 phonetic neighbors — Kaylee, Hailey, and Bailey are the closest matches by sound. Most share Kayleigh's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"slender, slim and fair"
"ancient, primordial"
"precious gem"
"warrior woman (modern interpretation)"
"eagle, noble strength"
"joyful, merry"
"to gaze, to behold"
"crown, garland"
"help, helper"
"church, from the town of Paisley"
"compassionate friend, companion"
"invented name; possibly related to 'life'"
"fair, smooth, white wave"
"entire, all-encompassing"
"bright, shining light"
"son of the sea, great tide"
"fair and smooth"
"royal child of the sky"
"bright, shining light"
"born of fire"
"favor, blessedness"
Similar sound: These names share phonetic patterns with Kayleigh — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Kayleigh.
Rhythm: Kayleigh is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.