Erling sits next to 4 phonetic neighbors — Erlan, Sterling, and Irving are the closest matches by sound. Most share Erling's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"descendant of a nobleman"
"God is gracious"
"free man"
"thunder, of Thor"
"thunder"
"who is like God?"
"place of eagles"
"peaceful ruler, peaceful power"
"son of Hans (John)"
"who is like God? (no one!)"
"bright friend"
"short form of Astrid"
"relic of ancestors"
"sheltered bay, cove"
"God is gracious"
"rule, standard"
"gift of God"
"attached, joined (Levi connection)"
Similar sound: These names share phonetic patterns with Erling — 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 Erling.
Rhythm: Erling is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.