Sunny sits next to 5 phonetic neighbors — Honey, Bunny, and Winnie are the closest matches by sound. Most share Sunny's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"cheerful, bright like the sun"
"crown of laurels"
"devoted to God"
"noble, nobility"
"slender, fair"
"beloved, exalted crown"
"sweet singer"
"vision of beauty"
"woodland clearing"
"lover, sweetheart"
"divine messenger"
"lily flower, pure"
"descending river"
"diminutive of Julia; little Julia"
"shining, bright"
"child of heaven"
"friendly one, ally"
"son of Kenneth"
"royalty, of noble rank"
"fair bow, white arc"
Similar sound: These names share phonetic patterns with Sunny — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Sunny.
Rhythm: Sunny is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.