Sully sits next to 4 phonetic neighbors — Sullivan, Solly, and Sulley are the closest matches by sound. Most share Sully's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"descendant of the dark-eyed one"
"son of Emery, ruler of work"
"army ruler, commander"
"from the city of Troy"
"warrior, earth ruler"
"glory wolf"
"all right, in harmony"
"supplanter"
"exalted of the Lord"
"one who carries Christ within"
"gates of paradise, lush"
"glorious power"
"prince, king"
"to set, to place, to establish"
"God has given"
"one who tends a gate or hatchway"
"sea, ocean (via Kai)"
"new house"
"constructed blend name"
"gracious, merciful"
"little poet; philosopher"
Similar sound: These names share phonetic patterns with Sully — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Sully.
Rhythm: Sully is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.