Carolyn sits next to 3 phonetic neighbors — Caroline, Carol, and Carolina are the closest matches by sound. Most share Carolyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"free woman"
"star of the sea"
"beautiful jade, delicate"
"descendant of Dubh Slainghe (dark one of the Slaney)"
"of genuine quality, excellent"
"life"
"calm endurance of hardship"
"descendant of Séaghdha"
"divine, god-like"
"illustrious, brilliant"
"of noble kind, noble natured"
"agreement, concord, fitting together"
"woodland clearing"
"strip-shaped woodland clearing"
"pearl"
"beautiful flower"
"graceful meadow"
"lovely, fair"
"child of the earth"
"delicate, languishing"
"sea, ocean"
Similar sound: These names share phonetic patterns with Carolyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Carolyn.
Rhythm: Carolyn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.