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"
"from Brittany, land of Britons"
"fertile plain, coastal plain of Sharon"
"coal town"
"modern coined name, meaning unclear"
"star of the sea"
"joyful"
"lady, mistress"
"my God is abundance"
"noble, bright"
"brave, hardy"
"whole, universal"
"beautiful, pretty"
"land of the black soil"
"God is abundance"
"descendant of Cathasach"
"cheerful"
"beautiful flower"
"from the marshy ground"
"foreigner, guest"
"daughter, girl"
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.