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"
"beautiful flower"
"the sky, the heavens"
"little one (diminutive suffix)"
"little wren bird"
"song thrush (a songbird)"
"illustrious, brilliant"
"sea, ocean"
"power of the household"
"a bright flowering plant, named after botanist Johann Gottfried Zinn"
"eternal ruler, ever mighty"
"immortal, eternal"
"white island"
"God has heard"
"gracious gift of God"
"the jade gemstone"
"equity, lawfulness"
"divine, god-like"
"foreigner, guest"
"who is like God? (none compares)"
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.