Macy sits next to 4 phonetic neighbors — Maisie, Lacey, and Stacy are the closest matches by sound. Most share Macy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Massy, Normandy"
"noble, princess"
"sun, throne"
"ring of light"
"grace, favor"
"young woman, maiden"
"follower of Christ, anointed one"
"lion of God"
"entire, all-encompassing"
"of the sea, maritime"
"defender of mankind"
"rocky land"
"knowledge, wisdom"
"fate, predetermined course"
"faith, trust"
"precious gem"
"divine spirit, goddess"
"star, celestial body"
"white wave, fair one"
"leaping water"
Similar sound: These names share phonetic patterns with Macy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Norman origins, giving them the same cultural heritage as Macy.
Rhythm: Macy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.