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"
"laurel, victory"
"modern invention, melodic variation"
"eternal beauty, unblemished love"
"rye clearing"
"smiley, cheerful one"
"each of the two, pure"
"gazelle"
"radiance, dawn"
"God has answered"
"whole, universal"
"keel of a ship"
"heavenly sea, sky and ocean"
"strife, discord"
"native Hawaiian acacia tree"
"palm tree"
"beloved, wished-for child"
"rose lake, rose by the water"
"to love deeply, to worship"
"blissful, from Elysium"
"song, tune, musical chant"
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.