Caitlyn sits next to 5 phonetic neighbors — Kaitlyn, Caitlin, and Katelyn are the closest matches by sound. Most share Caitlyn's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, unblemished"
"Beautiful"
"born on Christmas Day"
"sincere intention"
"awakening"
"dark-feathered bird, the raven"
"made of gold, golden"
"sun goddess, solar"
"quince (the fruit)"
"high, exalted"
"something that heals or corrects"
"barberry shrub"
"gracious, favored"
"soft breeze, gentle wind"
"warlike, brave"
"combination of Avery and Everly"
"modern invented combination name"
"gracious rose"
"free woman, free person"
"birch wood clearing"
"from Ávila"
Similar sound: These names share phonetic patterns with Caitlyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Irish origins, giving them the same cultural heritage as Caitlyn.
Rhythm: Caitlyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.