Elwood sits next to 3 phonetic neighbors — Elliot, Edward, and Attwood are the closest matches by sound. Most share Elwood's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"woodland near the elder trees"
"counselor, advisor"
"little hawk"
"page boy, herald"
"gentle, lenient"
"leopard, swift and agile"
"noble, refined"
"man of Rome"
"pointed hill, peaked summit"
"he enlightens, God enlightens"
"Romantically associated with the poet Lord Byron meaning noble and ..."
"chosen deliverer, consecrated leader"
"thankful"
"mythic bird of rebirth and renewal"
"son of Hendry (Henry)"
"settlement by the sea"
"from Brock's town, badger settlement"
"narrow (from Kyle's Gaelic root caol)"
"hero, brave warrior"
"bold counsel, brave advisor"
Similar sound: These names share phonetic patterns with Elwood — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Elwood.
Rhythm: Elwood is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.