Kayden sits next to 4 phonetic neighbors — Caden, Aidan, and Hayden are the closest matches by sound. Most share Kayden's Arabic (Qaydan)-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"battle, companion"
"handsome; fair one"
"ruler of the home"
"strife, quarrel"
"gracious, merciful"
"descended from James, meaning supplanter"
"God is gracious (via Jack, from John)"
"crooked nose"
"round barrel, lump"
"From the Scottish place name Logan; a topographic name from Gaelic ..."
"son of Brice, the speckled one"
"church official overseeing ten"
"white hawk of battle"
"son of the sea, great tide"
"Gaelic-speaking person; Celtic person"
"Scottish form of John, gift of God"
"one who resembles God"
"from the western farmstead"
"supplanter"
"wood, forest; man of the forest"
"crowned with laurel, symbol of victory"
Similar sound: These names share phonetic patterns with Kayden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic (Qaydan) origins, giving them the same cultural heritage as Kayden.
Rhythm: Kayden is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.