Bonnie sits next to 4 phonetic neighbors — Connie, Ronnie, and Annie are the closest matches by sound. Most share Bonnie's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"beautiful, attractive, pleasant"
"God is gracious"
"bright, shining light"
"holy peace, blessed reconciliation"
"nourishing, kind"
"short form of Adelheid (noble natured)"
"industrious ruler"
"descendant of Caiside"
"strong, noble, high"
"transporter of goods by cart"
"God is my judge"
"innocent, virginal"
"battlefield"
"divine spirit, goddess"
"son of Cionaodh"
"free one"
"burnt woodland clearing"
"moon"
"winged island"
Similar sound: These names share phonetic patterns with Bonnie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish English (bonnie) origins, giving them the same cultural heritage as Bonnie.
Rhythm: Bonnie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.