Barbara sits next to 5 phonetic neighbors — Barbie, Barbra, and Tamara are the closest matches by sound. Most share Barbara's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"foreign woman, stranger"
"exalted, ascending"
"shining torch"
"land of the Malay people"
"reference to Our Lady of Ainhoa (the Virgin Mary)"
"from Brittany, land of the Britons"
"goddess of fate and weaving"
"youthful (from Julia)"
"grace, merciful"
"sky, heavens"
"variant of Jackie or Casey"
"moon, light"
"flowing, like a stream"
"meadow clearing"
"famous warrior"
"coral, sea jewel"
"manifestation of God"
"pearl"
"gift of God"
"child of light"
"beloved child"
Similar sound: These names share phonetic patterns with Barbara — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek barbaros origins, giving them the same cultural heritage as Barbara.
Rhythm: Barbara is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.