Sonora sits next to 3 phonetic neighbors — Nora, Lenora, and Aurora are the closest matches by sound. Most share Sonora's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sonorous, resonant, pleasant-sounding"
"gift of God"
"God is gracious"
"from Lassy, Norman place name"
"my helper, my aid"
"purity, beauty"
"life"
"creator, maker"
"pleasantness, beauty"
"pleasantness, sweetness"
"life, living"
"fine red cloth, luxury textile"
"brightness, brilliance"
"maiden, girl"
"precious gem of the sea"
"short form of Miranda, worthy of admiration"
"variant of Rue (herb)"
"powerful, mighty"
"combination of Ana (grace) and -ly suffix"
"friend, ally"
Similar sound: These names share phonetic patterns with Sonora — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Spanish origins, giving them the same cultural heritage as Sonora.
Rhythm: Sonora is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.