Cayleigh sits next to 5 phonetic neighbors — Kaylee, Kayleigh, and Bailey are the closest matches by sound. Most share Cayleigh's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
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"from céilí, traditional Irish dance gathering"
"praise (folk association with Hallelujah)"
"happy, joyful"
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"modern American coinage"
Similar sound: These names share phonetic patterns with Cayleigh — 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 Cayleigh.
Rhythm: Cayleigh is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.