Downing sits next to 4 phonetic neighbors — Donning, Dawning, and Duncan are the closest matches by sound. Most share Downing's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the hill settlement, dweller by the downs"
"desired, longed for"
"blonde one"
"powerful counsel"
"kingly"
"Christ-carrier"
"from the place near the meadow boundary"
"auspicious, divine blessing"
"lion-hearted"
Similar sound: These names share phonetic patterns with Downing — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English dun meaning hill origins, giving them the same cultural heritage as Downing.
Rhythm: Downing is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.