Magnus sits next to 3 phonetic neighbors — Marcus, Maximus, and Angus are the closest matches by sound. Most share Magnus's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great"
"son of James"
"messenger, herald"
"ruler of the world"
"God is gracious"
"wanderer, Gaelic speaker"
"wood, forest"
"rock, harmony"
"messenger"
"dragon"
"benevolent warrior"
"son of fire"
"victory of the people"
"mighty power, ruler"
"the cleansing one"
"treasurer, keeper of treasure"
"one who crafts arrows"
"high mountain, exalted"
"the twin"
"slender, bright-headed"
Similar sound: These names share phonetic patterns with Magnus — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Magnus.
Rhythm: Magnus is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.