Pierce sits next to 4 phonetic neighbors — Piers, Pierce, and Reece are the closest matches by sound. Most share Pierce's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rock, stone"
"young creature, cub"
"fifth"
"pure, without blemish"
"mighty power, ruler"
"son of Jeffrey, son of God's peace"
"good fortune, luck"
"to hold fast, to restrain"
"fingernail, claw"
"strong, healthy"
"ruler of the home"
"traverser, one who crosses"
"gift, from the sea"
"peace, complete"
"great town"
"raven"
"God has given"
"battle strength"
"son of Karr"
"lover of horses"
"peaceful ruler"
Similar sound: These names share phonetic patterns with Pierce — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Latin origins, giving them the same cultural heritage as Pierce.
Rhythm: Pierce is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.