Kilyan sits next to 5 phonetic neighbors — Killian, Cillian, and Kilian are the closest matches by sound. Most share Kilyan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"church, monastic cell"
"resolute protector"
"radiant, luminous"
"hawk of the plain"
"he who supplants, holds by the heel"
"glory in battle"
"open field, cultivated land"
"chief, lord"
"one who bakes (occupational surname)"
"great, venerable"
"unwavering, firm"
"slender, powerful"
"little battle, warrior spirit"
"peaceful (from Latin pax)"
"son of Jack"
"fierce, savage"
"hat maker, cap maker"
"God is my help (from Hebrew Ezra) + real/royal suffix"
"bright fame"
"from Lucania (region of southern Italy)"
"gift of God (folk etymology)"
Similar sound: These names share phonetic patterns with Kilyan — 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 Kilyan.
Rhythm: Kilyan is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.