Saint sits next to 2 phonetic neighbors — Sainte and Sane are the closest matches by sound. Most share Saint's Latin via Old French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"holy person; one recognized for virtue and closeness to God"
"divine, god-like"
"one who walks"
"the Lord is my God"
"son of Kyle"
"venerable, sacred"
"patrician, of noble birth"
"dear one of God"
"one who glorifies God"
"beloved son"
"strong and brave"
"thankful, God has heard"
"wise person"
"ever powerful"
"fighter"
"superlative of magnus (great)"
"winding valley"
"narrow strait, channel"
"greatest"
"kingly, of royal blood"
"story to be read, remarkable person"
Similar sound: These names share phonetic patterns with Saint — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin via Old French origins, giving them the same cultural heritage as Saint.
Rhythm: Saint is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.