Kaspen sits next to 3 phonetic neighbors — Casper, Kaspar, and Jasper are the closest matches by sound. Most share Kaspen's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"treasurer"
"small, little"
"friend, companion"
"freshness, water"
"one who covers"
"tailor, one who cuts cloth"
"brilliantly noble"
"vigor, intensity"
"God's inspiration"
"Little red one"
"peaceful power"
"little Hasan (diminutive of good)"
"Son of Nils (Neil); son of the champion"
"Canopus star, bright star"
"birth, nativity"
"forest ranger, game warden"
"peaceful, gentle"
"dear Muhammad, praised soul"
"brilliant of the north"
"powerful ruler"
Similar sound: These names share phonetic patterns with Kaspen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Persian origins, giving them the same cultural heritage as Kaspen.
Rhythm: Kaspen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.