Hersh sits next to 4 phonetic neighbors — Hirsch, Hershel, and Hersch are the closest matches by sound. Most share Hersh's Yiddish/Germanic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"deer, stag"
"maker or seller of knives"
"son of Hans (John)"
"little fire (interpretive)"
"settlement near rye fields"
"swift, victorious"
"small"
"short form of Cameron or Camden"
"slender, powerful in battle"
"he laughs, he will laugh"
"gray valley, son of the gray one"
"victory of the people"
"hollow, seething pool"
"brave, strong boar"
"powerful, warrior"
"healer, physician"
"valley dweller"
"pure (via Katharina in Norwegian use)"
"Charles's settlement"
"God is gracious"
Similar sound: These names share phonetic patterns with Hersh — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Yiddish/Germanic origins, giving them the same cultural heritage as Hersh.
Rhythm: Hersh is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.