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.
You searched for names like
"from céilí, traditional Irish dance gathering"
"twin"
"a voyage, a day's travel, life's path"
"woodland, of the forest"
"little beloved one"
"night heaven, celestial darkness"
"untamed, free spirit"
"lily, rose"
"victorious people (if from Nicole root)"
"sea of bitterness or star of the sea"
"God's protection"
"gate of Paradise"
"ground, soil"
"variant of Larissa, city in Greece"
"noble, honorable"
"bird-like, soaring one"
"industrious ruler"
"viburnum tree, rosy beauty"
"flat tropical grassland"
"invented phonetic name"
"member of the Gauts tribe"
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.