Augustus sits next to 4 phonetic neighbors — August, Augustine, and Augusto are the closest matches by sound. Most share Augustus's Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"favored by the gods"
"Poecc's estate; Poecc's settlement"
"free man, freeholder of land"
"from Laurentum, laurel-crowned"
"park, game preserve"
"light, illumination"
"hawk of the plain"
"dark-complexioned"
"at the ash tree"
"narrow strait, channel"
"red-haired, ruddy complexion"
"descendant of the red-haired one"
"consecrated, increased"
"ever powerful"
"one who bails, deliverer"
"from Brix (place name)"
"from the people (damos)"
"crown, wreath"
"Frenchman"
"military commander, war leader"
"wise protector"
Similar sound: These names share phonetic patterns with Augustus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Augustus.
Rhythm: Augustus is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.