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"
"settlement near the coal"
"from the wetlands"
"son of Jens (son of John)"
"who is like God"
"ever powerful"
"royal ruler"
"dark red, crimson"
"son of the lion"
"little rock, harmony"
"meadow land"
"God is gracious (via John/Zane)"
"modern American invented name"
"God is my judge (variant of Daniel)"
"like the sun"
"one who lives near a riverbank"
"son of Nicholas (via Cole)"
"renowned in battle"
"noble and ready"
"from Attica, man of Athens"
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.