Kaynen sits next to 4 phonetic neighbors — Kanen, Caelan, and Kainen are the closest matches by sound. Most share Kaynen's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"spear, metalsmith"
"little red one"
"the wind, breath of life"
"occupational surname turned first name"
"of the Jordan River"
"he who heals with herbs"
"strong, firm, enduring"
"modern invented name, combination of Tae and -vion"
"modern invented name, strength implied"
"land by the winding stream"
"royal power"
"heart, mind (from Hugh root)"
"of/from Sean — modern American creation"
"to shine, tremble with light"
"landholder, lord"
"handsome, beautiful"
"middleman, arbitrator"
"divine strength"
"the Lord is salvation"
Similar sound: These names share phonetic patterns with Kaynen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Kaynen.
Rhythm: Kaynen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.