Katin sits next to 4 phonetic neighbors — Kadan, Kalin, and Catin are the closest matches by sound. Most share Katin's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, innocent"
"born at dawn or daylight"
"circle ruler, king of the realm"
"strong"
Similar sound: These names share phonetic patterns with Katin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Slavic origins, giving them the same cultural heritage as Katin.
Rhythm: Katin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.