Riggs sits next to 3 phonetic neighbors — Ridge, Briggs, and Biggs are the closest matches by sound. Most share Riggs's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dweller by the ridge"
"sweetheart, dear one"
"healer (via Jason)"
"fair warrior, white hero"
"enduring and beautiful"
"one who carries loads, carrier"
"from Antwerp"
"lover of horses"
"God is salvation, Yahweh saves"
"help, helper"
"winding valley"
"Hugh's settlement, town"
"woodland"
"sea, ocean (kai component)"
"lion hardy"
"elevated one"
"rock, harmony"
"of the Lord, belonging to God"
"God's peace, divine peace"
"of the forest; woodland"
Similar sound: These names share phonetic patterns with Riggs — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English hrycg origins, giving them the same cultural heritage as Riggs.
Rhythm: Riggs is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.