Caspen sits next to 4 phonetic neighbors — Casper, Jasper, and Casen are the closest matches by sound. Most share Caspen's Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"treasurer, keeper of treasure"
"divine, godly"
"divine favor"
"to tame, subdue"
"from Leamhanaich (elm grove place)"
"fortunate, prosperous"
"noble ruler"
"courageous, valiant"
"possession, acquired"
"king, emperor, ruler"
"to travel leisurely"
"God will uplift"
"from Artagnan, a village in Gascony, France"
"Canopus star, bright star"
"anointed one who carries"
"God has remembered"
"thatcher, roofer"
"bird catcher, fowl hunter"
"cheerful, bright, happy"
"Brock's settlement (place name origin)"
Similar sound: These names share phonetic patterns with Caspen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Persian origins, giving them the same cultural heritage as Caspen.
Rhythm: Caspen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.