Cyril sits next to 3 phonetic neighbors — Cyrus, Cecil, and Carl are the closest matches by sound. Most share Cyril's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lordly, masterful"
"servant of God"
"strengthened by God"
"maiden"
"dark complexion"
"God waits, hope in God"
"descendant of the spirited one"
"God is gracious"
"crowned one"
"short form of Isaac"
"little slender one"
"hill, marshland"
"son of Cadan, fighter"
"of uncertain meaning, possibly healer"
"determined guard, resolute protector"
"from Courtenay (place in France)"
"land by the road"
"Carl's town or farm"
"from the white settlement"
"stone-like, hard, steadfast"
"steep rock face by a crossing"
Similar sound: These names share phonetic patterns with Cyril — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Cyril.
Rhythm: Cyril is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.