Mattias sits next to 4 phonetic neighbors — Matthew, Matias, and Matthias are the closest matches by sound. Most share Mattias's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gift of God, gift of Yahweh"
"wise as a wolf"
"motion, movement"
"barrel maker, cask craftsman"
"man, husband (older Germanic sense)"
"thatcher, roof builder"
"supplanter, one who follows at the heel"
"winner in battle"
"divine protection"
"strife"
"warrior"
"home on the wooded hill"
"eagle"
"who is like God?"
"of the earth"
"one with a sacred name"
"in him there is strength"
"God has heard (via Samuel)"
Similar sound: These names share phonetic patterns with Mattias — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Mattias.
Rhythm: Mattias is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.