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"
"one who walks"
"royal ruler"
"famous warrior"
"promised land, sanctuary"
"free, liberated"
"son of Owen"
"he who descends, descent"
"people's triumph"
"money box, treasury"
"a church official or head"
"son of Carsun, dweller near the marsh"
"place of elms"
"gift of God"
"broad meadow"
"superlative of magnus (great)"
"modern American invented name"
"pilgrim to Rome; from Rome"
"river, great river"
"at the ash tree"
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.