Reis sits next to 3 phonetic neighbors — Reese, Ray, and Race are the closest matches by sound. Most share Reis's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"kings, royalty"
"God is gracious"
"handsome, distinguished"
"he will enlighten"
"from Avellino, place of hazel trees"
"flower"
"from the Navier family name (ship-maker)"
"God will add, beloved"
"helper, protector"
"crowned one"
"God is my salvation"
"confidence, trust, faith"
Similar sound: These names share phonetic patterns with Reis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Portuguese origins, giving them the same cultural heritage as Reis.
Rhythm: Reis is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.