Kacey sits next to 4 phonetic neighbors — Casey, Kasey, and Lacey are the closest matches by sound. Most share Kacey's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"brave in battle, vigilant"
"he who causes distress"
"vigilant in battle"
"God shall add (another son)"
"valley, dell"
"young warrior, free man"
"sky father, divine sky"
"tile maker, one who tiles"
"man, husband (older Germanic sense)"
"strife"
"permanent, steadfast"
"song, singing bird"
"crooked nose"
"gift, wealthy possessor"
"gray-haired one"
"from the crooked stream"
"noble power, powerful ruler"
"laughter"
"wild rose, thorny shrub"
Similar sound: These names share phonetic patterns with Kacey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Kacey.
Rhythm: Kacey is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.