Santos sits next to 3 phonetic neighbors — Santiago, Santino, and Santo are the closest matches by sound. Most share Santos's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"saints, the holy ones"
"priceless one"
"the twin"
"noble readiness"
"wealthy, rich"
"savior, rescuer"
"God is gracious"
"protector of men"
"he will awaken"
"appointed by God"
"king"
"immortal, divine"
"honoring God"
"supreme, of highest rank"
"earnest, serious, vigorous"
"one who is well-spoken of"
"he who enlightens"
"God is gracious"
"little warrior, young Mars"
"younger, the son"
"belonging to Mars, the war god"
Similar sound: These names share phonetic patterns with Santos — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin sanctus (holy) origins, giving them the same cultural heritage as Santos.
Rhythm: Santos is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.