Maddix sits next to 5 phonetic neighbors — Maddox, Madix, and Mattix are the closest matches by sound. Most share Maddix's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fortunate, good"
"protector"
"spiritually elevated"
"God has answered"
"pure, clear"
"gift of Yahweh"
"knowledge gained by inquiry"
"gift of God"
"friendship, constancy (flower language)"
"one who makes, creator of verse"
"ugly head (literal Old Irish)"
"little son, dear boy"
"creative variant of Harmony or Imani"
"champion, winner"
"Mythical guardian: part eagle, part lion"
"womanly strength"
"strength, force"
"corn, golden grain"
"heavenly sea"
"Derived from McKenzie; son of the fair one"
"herb garden estate"
Similar sound: These names share phonetic patterns with Maddix — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Maddix.
Rhythm: Maddix is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.