Xerxes sits next to 3 phonetic neighbors — Zephyr, Xerces, and Xander are the closest matches by sound. Most share Xerxes's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hero among kings"
"beautiful, excellent"
"one who belongs to justice"
"greatness, glory, majesty"
"treetop, eloquent speaker"
"noble excellence, virtue"
"unique, singular, one of a kind"
"full moon, radiant"
"God, the divine"
"gift"
Similar sound: These names share phonetic patterns with Xerxes — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Persian origins, giving them the same cultural heritage as Xerxes.
Rhythm: Xerxes is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.