Stacy sits next to 4 phonetic neighbors — Tracy, Lacey, and Gracie are the closest matches by sound. Most share Stacy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"resurrection, rising again"
"Jay + lake (modern coinage)"
"noble, of the patrician class"
"girl"
"of the flowering camellia shrub"
"pure"
"noble, adorned + lake/waterfall"
"citadel, fortress"
"bright fame"
"beloved, precious"
"sun (via Persian Kira)"
"from Massy (Norman town)"
"grace, beloved"
"modern coined name"
"harmony of sounds, consonance"
"from the kingdom of Lothar"
"beautiful"
"mounted warrior, horseman"
"son of Matthew, gift of God"
"lion of God"
"beloved, variant of Maria"
Similar sound: These names share phonetic patterns with Stacy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek (anastasis) origins, giving them the same cultural heritage as Stacy.
Rhythm: Stacy is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.