Atwood sits next to 3 phonetic neighbors — Ashwood, Attwood, and Artwood are the closest matches by sound. Most share Atwood's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dweller at the wood"
"light (from Lucius)"
"valley dweller"
"Bright light, torch, shining one"
"gold, golden one"
"home ruler, powerful ruler"
"God is gracious"
"cat genus name"
"Valley of the linden trees"
Similar sound: These names share phonetic patterns with Atwood — 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 Atwood.
Rhythm: Atwood is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.