Kenner sits next to 5 phonetic neighbors — Connor, Kenyon, and Bennett are the closest matches by sound. Most share Kenner's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"born of fire, handsome chief (via Kenneth/Cionaodha)"
"dwellers in wooded hills"
"wholehearted, all heart, faithful"
"impulsive, wrathful"
"hawk"
"messenger"
"pledge, hostage"
"good, virtuous (possible East African origin)"
"the tall one"
"the art of the Magi (Persian wise men)"
"deep affection, tender devotion"
"green gemstone"
"spear ruler"
"enthusiastic speech, advice"
"modern invented name, phonetic creation"
"strong, powerful, prosperous"
"rest, comfort"
"new day, new light (interpreted)"
"to wait, to summon"
"small forest grove"
"herald, messenger"
Similar sound: These names share phonetic patterns with Kenner — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Kenner.
Rhythm: Kenner is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.