Angus sits next to 3 phonetic neighbors — August, Amos, and Angis are the closest matches by sound. Most share Angus's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one strength, unique strength"
"crooked river"
"bright, fair"
"champion (from Old Irish Niall)"
"bent river"
"vigilant in war"
"Son of Walter"
"little fire"
"rapid water"
"slender, narrow"
"descendant of Caiside"
"son of Gerald"
"descendant of the hound of valor"
"son of Hendry (Henry)"
"messenger of God"
"muddy farm or settlement"
"round hill, hillock"
"light, pale"
"acquired, possessed"
Similar sound: These names share phonetic patterns with Angus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Angus.
Rhythm: Angus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.