Kaine sits next to 5 phonetic neighbors — Kane, Cain, and Cane are the closest matches by sound. Most share Kaine's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"warrior, fighter"
"land of oak trees"
"wealthy guardian"
"safe, unharmed (proposed etymology)"
"God is salvation"
"modern coined name, variant of Kyson"
"from Radley (red clearing)"
"pointed hill"
"savior"
"victorious protection (Sigmund root)"
"Chinese unicorn, bringer of good fortune"
"deer people (from Devon)"
"bright, clear, famous"
"free man (via Carson)"
"may God protect"
"son of Ky (invented)"
"messenger of God"
"youth, young warrior"
"powerful in battle"
"like steel, strong and hard"
"invented name; possibly son of the fearless one"
Similar sound: These names share phonetic patterns with Kaine — 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 Kaine.
Rhythm: Kaine is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.