Demetricus sits next to 4 phonetic neighbors — Demetrius, Dimitri, and Dimitrius are the closest matches by sound. Most share Demetricus's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"devoted to Demeter, of the earth goddess"
"son of the champion"
"fortified camp"
"moon"
"from Magdala"
"wanderer, Wend (tribal people)"
"topographic surname from a place in England"
"wise protection"
Similar sound: These names share phonetic patterns with Demetricus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Demetricus.
Rhythm: Demetricus is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.