Marek sits next to 3 phonetic neighbors — Marco, Mark, and Marius are the closest matches by sound. Most share Marek's Polish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Mars, dedicated to Mars"
"horse-loving"
"gift bearer"
"who is like God"
"God has given"
"protector of people"
"priceless, of inestimable worth"
"who is like God (form of Michael)"
"universal ruler"
"destroyer of peace (literal)"
"God will increase"
"God smiles"
"gift"
Similar sound: These names share phonetic patterns with Marek — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Marek.
Rhythm: Marek is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.