Zephyr sits next to 3 phonetic neighbors — Zara, Zelda, and Heather are the closest matches by sound. Most share Zephyr's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"west wind, gentle breeze"
"life-giving, full of life"
"my God is an oath, pledged to God"
"to ascend, climb"
"from Paisley, Scotland"
"pledged to God"
"lyric, of or relating to the lyre, suitable for singing"
"exalted by God"
"youthful, gracious"
"divine wisdom, celestial intelligence"
"new grace, gracious new beginning"
"shining light, bright one"
"hazel tree meadow"
"like coral, sea-born beauty"
"made of steel"
"bandage, bond (Greek etymology)"
"happy, joyful"
"meadow, woodland clearing"
"lioness of God"
"apple"
Similar sound: These names share phonetic patterns with Zephyr — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Zephyr.
Rhythm: Zephyr is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.