Maddux sits next to 4 phonetic neighbors — Maddox, Marcus, and Magnus are the closest matches by sound. Most share Maddux's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of the fortunate one"
"God is salvation"
"greatest town"
"quiet, calm, reserved"
"earth"
"little ancient one"
"God has built, Yahweh has built"
"handsome, radiant one"
"bright, clear, famous"
"short form of Nathan/Nathaniel"
"of the Vergilii clan, flourishing"
"God is gracious"
"rush plant (marsh grass)"
"beloved, dear one"
"modern invented name"
"to light up, illuminate"
"little dark one"
"battle, warrior"
"modern invented name"
"God has given"
"the color gray"
Similar sound: These names share phonetic patterns with Maddux — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh (Madog) origins, giving them the same cultural heritage as Maddux.
Rhythm: Maddux is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.