Karen sits next to 4 phonetic neighbors — Karin, Caren, and Karyn are the closest matches by sound. Most share Karen's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, chaste"
"small, humble (feminine diminutive of Paul)"
"honorable conduct"
"ruler's meadow"
"elevated place, great one"
"unique beauty (possible Zulu-influenced)"
"beloved, of the sea"
"power of the household"
"divine gift, consecrated one"
"protected by God"
"fair meadow"
"entirely beautiful"
"downy-bearded, youthful"
"from the marshes"
"rival, industrious"
"from the church, basilica"
"a day's travel, adventure"
"elevated, great one"
"sacred scripture"
"bright, shining one"
Similar sound: These names share phonetic patterns with Karen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Danish origins, giving them the same cultural heritage as Karen.
Rhythm: Karen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.