Sherwin sits next to 3 phonetic neighbors — Sherwood, Darwin, and Erwin are the closest matches by sound. Most share Sherwin's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Bright friend"
"of the forest, woodland dweller"
"fame and glory"
"stunned, dazzled"
"one who dashes, swift person"
"fortunate, blessed"
"removing darkness through light"
"Benevolent; goodwill; one who does good"
Similar sound: These names share phonetic patterns with Sherwin — 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 Sherwin.
Rhythm: Sherwin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.