Katrina sits next to 5 phonetic neighbors — Katherine, Katerina, and Katrine are the closest matches by sound. Most share Katrina's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure"
"light, bright, shining"
"heavenly flower"
"illusion"
"clearing with bent grass"
"God is my oath"
"creative American coinage"
"home of the ruler/power"
"modern feminine form of Tyler"
"little dear"
"little hound, little dog"
"Jehovah provides"
"my father is joy"
"woman from Magdala (tower)"
"favored, kind"
"fair pool"
"watch mountain, guardian"
"rock, stone"
"palm tree"
"meadow, clearing"
"compassionate, responsive one"
Similar sound: These names share phonetic patterns with Katrina — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek katharos via Latin Katharina origins, giving them the same cultural heritage as Katrina.
Rhythm: Katrina is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.