Kayce sits next to 4 phonetic neighbors — Casey, Kasey, and Kacey are the closest matches by sound. Most share Kayce's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"alert, watchful, vigilant"
"handsome; fair one"
"free man"
"born on Sunday"
"friend, companion"
"Beauty, grace"
"sun, like the sun"
"shallow river crossing"
"red-haired, little red one"
"good, blessing"
"son of Kyle"
"pledge of peace"
"south Munster (place name)"
"Brandon's woodland clearing"
"young dog, whelp"
"God will raise up"
"son of Jack"
"Yahweh is merciful"
"growth, abundance"
"eagle"
Similar sound: These names share phonetic patterns with Kayce — 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 Kayce.
Rhythm: Kayce is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.