Kennedy sits next to 3 phonetic neighbors — Kennidy, Kendall, and Kennedi are the closest matches by sound. Most share Kennedy's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"helmeted chief; armored head"
"of noble origin"
"word name from archery term"
"son of Rand, son of the shield-wolf"
"fleet of ships"
"dark-haired"
"overseer, tenant farmer"
"youthful, downy-bearded (first beard)"
"fate, fortune"
"qualitative time, the fullness of time"
"stubborn one"
"supplanter, he who follows at the heel"
"God is gracious"
"narrow land, island"
"sun, sunshine"
"grace, blessing"
"wanderer (from Scotti people's migrations)"
"follower of Calvin (in Protestant tradition)"
"sacred, holy"
"strong as an oak"
Similar sound: These names share phonetic patterns with Kennedy — 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 Kennedy.
Rhythm: Kennedy is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.