Sun sits next to 4 phonetic neighbors — Son, Sean, and Sonny are the closest matches by sound. Most share Sun's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"the sun, solar light"
"honoring God"
"regal and precious"
"rising, ascending"
"invented name, no inherent meaning"
"Lord have mercy"
"peaceful will"
"counsel power, wise advisor"
"Yahweh remembers"
"rye clearing, rye meadow"
"legend, heroic story"
"eternal king, pure lineage"
"son of Rawlin"
"from the Bexton place"
"dark, black"
"one who follows"
"pledge or oath"
"great, venerable, magnificent"
"variant of Cassius"
"gift of God, godlike"
Similar sound: These names share phonetic patterns with Sun — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Sun.
Rhythm: Sun is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.