Jaina sits next to 5 phonetic neighbors — Jana, Jane, and Jaina are the closest matches by sound. Most share Jaina's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"princess; noble lady"
"Geirr's island, spear island"
"family, extended family"
"of the sun, solar"
"royal valley"
"from Devon, the deep places"
"valley of the River Kent"
"high, exalted"
"branch, tendril of a grapevine"
"feminine of Justin"
"spirited one, descendant of Bradach"
"sweet water, fair river"
"hostage of good faith"
"crowned with laurels (via Stephanie)"
"lake, pool"
"victory bearer"
"descendant of Lorcán"
"wealthy guardian"
"star of the sea"
"rosy, heathen"
Similar sound: These names share phonetic patterns with Jaina — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jaina.
Rhythm: Jaina is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.