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"
"gravelly homestead"
"may God strengthen him"
"wealthy"
"brave, lion-hearted"
"peaceful ruler"
"ascended, exalted"
"from Judah (the tribe)"
"son of the home ruler"
"settlement by the charcoal burners"
"keeper of the park, park ranger"
"light, illumination"
"fair-haired hero; white warrior"
"given by God"
"descendant of Bradán (salmon)"
"round hill"
"God supports, Yahweh heals"
"crossing, toll bridge operator"
"handsome"
"warrior, strong man"
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.