California sits next to 4 phonetic neighbors — Callie, Caroline, and Catalina are the closest matches by sound. Most share California's Spanish/literary-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"island of the queen, named after fictional paradise Califia"
"to fill to excess, satiate"
"foot soldier near the lake"
"famous warrior"
"one who busts, tough person"
"feminine elaboration of Odin (Norse chief god)"
"pledge, oath"
"elf ruler (alternative folk etymology via Old English)"
"hilltop town"
"famous, bright warrior"
Similar sound: These names share phonetic patterns with California — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Spanish/literary origins, giving them the same cultural heritage as California.
Rhythm: California is a 5-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.