Jovan sits next to 4 phonetic neighbors — John, Ivan, and Giovanni are the closest matches by sound. Most share Jovan's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"greatest one"
"ruler of the world"
"dear, gracious, beloved"
"people's champion"
"consecrated to Mars"
"iron"
"hero of God"
Similar sound: These names share phonetic patterns with Jovan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Greek origins, giving them the same cultural heritage as Jovan.
Rhythm: Jovan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.