Sunny sits next to 3 phonetic neighbors — Sonny, Suni, and Benny 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
"bright, full of sunshine"
"land bordering the sea"
"God is my help"
"Kryptonian birth name of Superman"
"watchful, vigilant (via Casey)"
"primordial deity, elder god"
"king's meadow, king's clearing"
"sage, seer, inspired poet"
"brave, heroic, courageous"
"dedicated to Mars"
"the pole star, fixed, immovable"
"power of the tribe"
"God is gracious"
"brave in battle, vigilant"
"diminutive of Scott"
"chief, lord"
"slender, bright-headed"
"warlike, martial"
"beginning, origin"
"laughter"
"promised land, heavenly realm"
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.