Samwise sits next to 4 phonetic neighbors — Samuel, Sam, and Samson are the closest matches by sound. Most share Samwise's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"half-wise; simple wisdom (ironic Old English)"
"place of elms"
"famous warrior"
"invented modern name, possibly blade-valley"
"sand hill, sandy mound"
"wild boar hunter"
"rejoicing, celebration"
"oak tree"
"settlement among the undergrowth, brushwood farm"
"sacred flower of enlightenment"
"strong lord"
"salutation, act of bowing"
"luxury, abundance"
"son of Eddie"
"hawk of the plain"
"variant of Cassius, ancient Roman gens name"
"falcon, bird of prey"
"Yahweh has remembered"
"desiring peace, will and peace"
"sad, sorrowful (folk etymology)"
"son of, awakening"
Similar sound: These names share phonetic patterns with Samwise — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English (Tolkien) origins, giving them the same cultural heritage as Samwise.
Rhythm: Samwise is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.