Sven sits next to 3 phonetic neighbors — Sten, Swen, and Sveinn are the closest matches by sound. Most share Sven's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"young warrior, young man"
"forest friend, house friend"
"priceless, of inestimable worth"
"diminutive of Hans (John)"
"son of Lars (son of Lawrence)"
"god of thunder and strength"
"estate ruler, powerful home"
"horse-loving"
"little rock, harmony"
"wise power"
"deciding warrior"
"army friend, honorable companion"
"belonging to Christ"
"beloved, darling"
"warrior"
"champion of the people"
Similar sound: These names share phonetic patterns with Sven — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Sven.
Rhythm: Sven is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.