Maddex sits next to 4 phonetic neighbors — Maddox, Maddux, and Mattox are the closest matches by sound. Most share Maddex's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fortunate, of good fortune"
"dweller by the gates"
"homeland person"
"who is like God"
"miracle of God"
"herder of sheep, shepherd"
"white, pure"
"fair, lawful"
"variant of Caden (battle)"
"born of yew tree"
"clever, skilled"
"ascended, elevated"
"the smallest unit of matter"
"Carl's island or stronghold"
"descendant of the champion"
"place of the birch trees"
"victory of the people"
"people's champion"
"Yahweh has given"
"of royal lineage, kingly"
"favored, blessed"
Similar sound: These names share phonetic patterns with Maddex — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Maddex.
Rhythm: Maddex is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.