Kaija sits next to 3 phonetic neighbors — Kaia, Kai, and Kaya are the closest matches by sound. Most share Kaija's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, holy"
"lion"
"eternal ruler"
"goddess"
"light, torch"
"peaceful, calm"
"servant of God"
"brightness of the day"
"anointed one"
"victory, triumph"
Similar sound: These names share phonetic patterns with Kaija — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Finnish origins, giving them the same cultural heritage as Kaija.
Rhythm: Kaija is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.