Mark sits next to 4 phonetic neighbors — Marc, Marcus, and Marco are the closest matches by sound. Most share Mark's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Mars, warlike"
"Beauty, grace"
"brave as a wild boar"
"strong-willed, wise"
"man, full-grown man"
"a church official or head"
"counsel's guardian"
"bent nose"
"great, magnificent"
"Yahweh is God"
"of Mars, warlike"
"defender of the people"
"dweller near the woods"
"God has healed"
"son of Jack"
"birth, nativity"
"little seal"
"noble, high"
"born on Sunday"
Similar sound: These names share phonetic patterns with Mark — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Mark.
Rhythm: Mark is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.