Wynnie sits next to 4 phonetic neighbors — Winnie, Wren, and Winona are the closest matches by sound. Most share Wynnie's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fair, white, blessed"
"cherry tree or fruit"
"related to Thalia: to blossom, to flourish"
"northeast wind"
"precious"
"Mack's stream, great stream"
"pledge, oath (possible Celtic origin)"
"little king"
"the garden, the orchard"
"cross, crucifix"
"beloved, star of the sea (Mary) + famous warrior (Lou)"
"the other Aenor (uncertain)"
"son of the right hand (via Benjamin)"
"apple"
"glowing white, pure, sincere"
"pure, innocent"
"precious gems, treasured one"
"little thing (endearing diminutive)"
"industrious, striving"
"strength, valor"
"bear strength"
Similar sound: These names share phonetic patterns with Wynnie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh (Gwyn) origins, giving them the same cultural heritage as Wynnie.
Rhythm: Wynnie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.