Markos sits next to 4 phonetic neighbors — Marcus, Marcos, and Marco are the closest matches by sound. Most share Markos's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Mars, warlike"
"healer"
"lord, master"
"protector of people"
"gift of God"
"well-pleasing, excellent"
"crown, garland, wreath of honor"
"virile, masculine, strong"
"chaos, conflict"
"not evil, innocent"
"victory of the people"
"foundation, steadfast one"
"devoted to Demeter"
"first among thinkers"
"firmness, constancy"
Similar sound: These names share phonetic patterns with Markos — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Markos.
Rhythm: Markos is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.