Winn sits next to 4 phonetic neighbors — Win, Finn, and Quinn are the closest matches by sound. Most share Winn's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fair, white"
"cascade, flowing water"
"victory of the people (via Nicholas)"
"little seal"
"bright settlement"
"thankful"
"industrious ruler"
"thatcher, roofer"
"fair, beautiful"
"pre-dawn wisdom"
"Yahweh has remembered"
"modern coinage, no historical meaning"
"flat-bladed digging tool"
"from the town by the sea"
"place by the lake"
"one island, isolated place"
"handsome, gentle, kind"
"oak grove"
"of Ibelin (place name origin)"
Similar sound: These names share phonetic patterns with Winn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Winn.
Rhythm: Winn is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.