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"
"short form of Orlando, famous land"
"myrrh, fragrant oil"
"variant of Caleb, meaning faithful"
"safe, unharmed (proposed etymology)"
"aster flower, purple"
"spear"
"my help is God"
"God heals"
"rocky outcropping, cliff dweller"
"avenger, one who does not forget"
"son of the earth"
"he who resembles God (rhetorical)"
"YHWH saves"
"descendant of Ceallach"
"to heal (if derived from Jason)"
"descendant of the courageous one"
"modern American creation"
"he judged, he governed"
"deserving, worthy"
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.