Jiaxin sits next to 4 phonetic neighbors — Jasmine, Jacinda, and Jaxine are the closest matches by sound. Most share Jiaxin's Chinese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joyful, happy"
"sacred offering, one who offers into the fire"
"noble meadow"
"beautiful princess"
"a flower, one who is pleasant and beautiful"
"hazel tree + lake/pool"
"Bright one of the meadow; combination of Lena (light, bright) and L..."
"gift of God"
"modern coinage, melodic invention"
"the quality of being morally good, righteous, or kind"
"beloved, of the sea"
"noble meadow"
"blessing, miracle"
"black meadow clearing"
"Night; dark beauty (elaboration of Layla)"
Similar sound: These names share phonetic patterns with Jiaxin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Chinese origins, giving them the same cultural heritage as Jiaxin.
Rhythm: Jiaxin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.