Maddox sits next to 3 phonetic neighbors — Mattox, Paddock, and Braddock are the closest matches by sound. Most share Maddox's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Madoc"
"divine reward"
"to rejoice, joyful"
"barrel maker"
"From the Irish 'Aodhan', a diminutive of Aodh, the Celtic god of fi..."
"from the hollow"
"from the Artorius family"
"sorrowful (folk etymology via French)"
"merciful, gentle"
"protector of humanity"
"whole, universal power"
"of the forest"
"dweller near the woods"
"from the eastern homestead"
"strong ruler, powerful leader"
"son of the steward"
"friendly, allies, friend"
"hay valley, hedged valley"
Similar sound: These names share phonetic patterns with Maddox — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Maddox.
Rhythm: Maddox is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.