Madelyn sits next to 3 phonetic neighbors — Madeline, Madeleine, and Adeline are the closest matches by sound. Most share Madelyn's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"high tower, elevated"
"father's joy"
"free woman"
"open, treeless grassland"
"told by God, God has heard"
"like a bird, birdlike"
"born at dawn or daylight"
"son of Emery, brave and powerful"
"faithful wife (mythological)"
"stone of the flank"
"battlefield, clearing"
"shelter, refuge"
"blooming, green shoot"
"beautiful one, noble"
"of the night, night monster"
"musician, entertainer"
"moon goddess"
"son of Kenneth"
"very sacred, utterly pure"
Similar sound: These names share phonetic patterns with Madelyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Madelyn.
Rhythm: Madelyn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.