Darrell sits next to 5 phonetic neighbors — Darryl, Darren, and Harold are the closest matches by sound. Most share Darrell's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Airelle (a place in Normandy, France)"
"qualitative time, the fullness of time"
"from the coal settlement"
"cloud"
"bold, daring (thunder-bold)"
"little seal"
"rare, extraordinary"
"nobleman of the second rank"
"to listen, to spy out"
"modern invented name"
"jet black, black gemstone"
"soaring, high-flying"
"God has built, Yahweh has built"
"God has healed"
"son of the fiery one"
"from Leicester"
"payment, redemption (word association)"
"from Kent, the English county"
"free man, warrior"
"remembered by God"
Similar sound: These names share phonetic patterns with Darrell — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Norman French origins, giving them the same cultural heritage as Darrell.
Rhythm: Darrell is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.