Coralyn sits next to 5 phonetic neighbors — Carolyn, Coraline, and Corinna are the closest matches by sound. Most share Coralyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"maiden, heart"
"noble"
"Defender; one who defends or helps (from alexein)"
"jasmine flower"
"spring, bitter grace"
"beloved, of the sea"
"to harvest"
"sky + diminutive suffix -lin"
"pearl"
"lady, woman of refinement"
"invented modern name"
"helpful, descendant of the helpful one"
"the sable marten"
"crooked nose, winding river bend"
"God is gracious (influenced by John/Jane root)"
"God is gracious + beautiful"
"hall stone, from the rocky hall"
"devotee of battle rule"
"founder; one who establishes"
"bright, clear"
"grace, favor"
Similar sound: These names share phonetic patterns with Coralyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Coralyn.
Rhythm: Coralyn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.