Kayne sits next to 5 phonetic neighbors — Kane, Cain, and Lane are the closest matches by sound. Most share Kayne's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"battle, warrior chief"
"rock, stone"
"of uncertain meaning, possibly healer"
"dark, black-haired"
"the legendary smith (from Weland/Völundr)"
"father of multitudes"
"earth"
"from Hugh's meadow, Hucc's woodland clearing"
"diminutive of Hugh (heart, mind)"
"from Wynstan's estate"
"son of Rhys, son of the ardent one"
"faithfulness, devotion, steadfast allegiance"
"dark one's town"
"elm grove, place of elms"
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"modern American coinage (rhyming name family)"
"from Lucania, southern Italy"
"one who resembles God"
Similar sound: These names share phonetic patterns with Kayne — 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 Kayne.
Rhythm: Kayne is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.