Aleksandar sits next to 4 phonetic neighbors — Alexander, Alexandru, and Aleksander are the closest matches by sound. Most share Aleksandar's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"defender of the people"
"son of the lion, lion-like"
"messenger of the gods"
"devoted to Demeter, follower of the earth goddess"
"thin-lipped"
"lion"
"from the island of Cyprus"
"God saves, salvation"
"battle, fighter, combatant"
"God has protected, God will protect"
"God is gracious"
"lord have mercy (liturgical phrase)"
"helper, one who defends"
"blind one (folk etymology)"
"the anointed one"
"life"
"gift of God"
Similar sound: These names share phonetic patterns with Aleksandar — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Greek origins, giving them the same cultural heritage as Aleksandar.
Rhythm: Aleksandar is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.