Kylian sits next to 4 phonetic neighbors — Killian, Cillian, and Kilian are the closest matches by sound. Most share Kylian's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"strife, war"
"from the people (damos)"
"rowan tree (mountain ash)"
"brave in battle"
"God is gracious"
"illustrious through nobility"
"south Munster (place name)"
"from the city of Troy"
"slender, thin"
"little one"
"noble, illustrious"
"people's victory"
"descendant of Ceallachán"
"helper, one who helps"
"son of the young warrior"
"battle, warrior"
"crown, wreath"
Similar sound: These names share phonetic patterns with Kylian — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish origins, giving them the same cultural heritage as Kylian.
Rhythm: Kylian is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.