Arch sits next to 3 phonetic neighbors — Archer, Arch, and March are the closest matches by sound. Most share Arch's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"truly brave, genuinely bold"
"God is my help"
"one who cuts cloth or stone"
"cloth merchant, fabric trader"
"from the fortified town"
"to care for, to cherish"
"farm by the dragging place"
"son of Jack"
"white, pure"
"steward, estate guardian"
"from Lucania, southern Italy"
"land near the court or manor"
"victory of the people"
"spark, smoldering fire"
"God raises up"
"firebrand, burning sword"
"all-knowing, wise"
"narrow strait (via Kyle)"
"God will strengthen"
"modern invented name; Ty (strength) + aire (air, atmosphere)"
"warrior, gift of God"
Similar sound: These names share phonetic patterns with Arch — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Arch.
Rhythm: Arch is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.