Sway sits next to 4 phonetic neighbors — Shea, Faye, and Ray are the closest matches by sound. Most share Sway's Old Norse via English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gentle rhythmic movement, to bend gracefully"
"mustard orchid (Chinese broccoli)"
"dark beauty"
"goddess of fortune and luck"
"creative American name blending La- prefix with -taysia element"
"Wistar's flower"
Similar sound: These names share phonetic patterns with Sway — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse via English origins, giving them the same cultural heritage as Sway.
Rhythm: Sway is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.