Darla sits next to 4 phonetic neighbors — Carla, Marla, and Starla are the closest matches by sound. Most share Darla's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"darling, beloved one"
"open plain"
"defender, helper of mankind"
"downy-bearded, youthful"
"God is gracious, God has shown favor"
"whole, universal"
"the great sea, vast waters"
"luminous, brilliant"
"maiden, girl"
"grace, favor"
"woodland clearing"
"helpful one"
"youthful goddess, keeper of immortality"
"bailiff, law enforcer"
"diamond in the sky, place of rest"
"real, authentic, not false"
"lily"
"sword, blade"
"fragrant spice"
"curly-haired, descendant of Caiside"
"traveler from a foreign land"
Similar sound: These names share phonetic patterns with Darla — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English 'deorling' origins, giving them the same cultural heritage as Darla.
Rhythm: Darla is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.