Briggs sits next to 3 phonetic neighbors — Brooks, Bragg, and Bridges are the closest matches by sound. Most share Briggs's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the bridges"
"whole, universal power"
"beloved son"
"son of Brice"
"from Grantham"
"house builder, craftsman"
"rising in the sky, boundary"
"full of goodness"
"patrician, of noble birth"
"little one"
"hunter, pursuer"
"breath, vapor, impermanence"
"lion"
"growth, abundance (speculative)"
"Yahweh has shown favor"
"dark warrior"
"one who glorifies God"
"people's victory"
"the victorious (Arabic city name)"
"benevolent, kind"
"settlement of the raven's people; raven-town"
Similar sound: These names share phonetic patterns with Briggs — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English / Old Norse origins, giving them the same cultural heritage as Briggs.
Rhythm: Briggs is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.