Cardi sits next to 3 phonetic neighbors — Cardi B, Cardie, and Carla are the closest matches by sound. Most share Cardi's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Cardigan (Welsh place name)"
"dark, black (complexion or hair)"
"ascent, going up"
"dear friend, beloved companion"
"Inuit goddess of the sea; ruler of the deep"
"possibly inspired by light (Akari parallel)"
"flower; to shine"
"chosen, select, the best"
"inspiring wonder and awe"
"pleasant wood by the lake"
"beloved"
"great house"
Similar sound: These names share phonetic patterns with Cardi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh Ceredigion origins, giving them the same cultural heritage as Cardi.
Rhythm: Cardi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.