Catalyna sits next to 4 phonetic neighbors — Catalina, Katarina, and Katerina are the closest matches by sound. Most share Catalyna's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pure, unsullied"
"torch, beacon"
"resolute guardian"
"watchful, on guard"
"creative invented name; possibly a family honor name"
"word, speech"
"good, honorable, noble"
"God is gracious"
"days eye, the sun"
"free person"
"member of the Gauts tribe"
"flower, blossom"
"noble kind"
"light, luminous"
"zero, spirit"
"of the Livius family; belonging to Livia"
"from Havana (place name)"
"variant of Cira or Cyra"
Similar sound: These names share phonetic patterns with Catalyna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Catalyna.
Rhythm: Catalyna is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.