Sam sits next to 4 phonetic neighbors — Cam, Ham, and Tam are the closest matches by sound. Most share Sam's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"name of God"
"rich spear, lucky warrior"
"great, venerable, majestic"
"water, thermal waters (place name)"
"gift of God"
"healer (from Greek Jason)"
"crow, dark bird"
"son of Jack"
"of the Caspian Sea"
"the brown one"
"lover of hounds, hound-desiring"
"invented name, no established etymology"
"Thor's stone"
"measure, measurement tool"
"strong man, warrior"
"child"
"beam of light"
"battle strength"
"supplanter"
"short form of Wesley or Weston"
"high mountain, exalted"
Similar sound: These names share phonetic patterns with Sam — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Sam.
Rhythm: Sam is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.