Mathias sits next to 4 phonetic neighbors — Matthias, Tobias, and Elias are the closest matches by sound. Most share Mathias's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gift of God, gift of Yahweh"
"free man"
"ruler of the army"
"brave as a lion"
"rich spear, lucky warrior"
"imperial title, ruler"
"light, illumination"
"always powerful"
"God is with us"
"defender of men"
"bold warrior"
"mill worker, grain grinder"
"handsome"
"of the Sergii clan"
"famous ruler"
"male, masculine"
"fortune's keeper"
"God is salvation, YHWH saves"
"upright, fair"
"wealthy companion"
Similar sound: These names share phonetic patterns with Mathias — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Mathias.
Rhythm: Mathias is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.