Betty sits next to 4 phonetic neighbors — Betsy, Beth, and Bette are the closest matches by sound. Most share Betty's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is my oath"
"bailiff, law enforcer"
"beautiful jade, delicate"
"Cyneburg's field, royal forest clearing"
"sea"
"dream, vision"
"noble, bright"
"delicate, gentle"
"whole, universal"
"grace, favor"
"clear, evident"
"my God is gracious"
"jewel of the sea"
"lame, the lame one"
"little dark one, dark-complexioned"
"maiden, daughter"
"golden, of gold (d'or)"
"sunlight, moon (alternate etymology)"
"God is gracious"
"eternal blossom"
"manifestation of God"
Similar sound: These names share phonetic patterns with Betty — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Betty.
Rhythm: Betty is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.