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"
"free man, free woman"
"lake, pool, waterside"
"little king"
"compassion, forgiveness, grace"
"gift of God"
"my princess"
"from the city of Troy (Ilium)"
"agreement, concord, fitting together"
"joy, song"
"woman from Magdala, high tower"
"dear to Saturn"
"queenly dignity, regal bearing"
"vigilant, watchful"
"God is gracious"
"elf counsel, elf power"
"child of light"
"sea distance, nautical mile"
"short form of Emma or Emilia"
"noble, high meadow"
"sun"
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.