Curtis sits next to 2 phonetic neighbors — Cortez and Kurtis are the closest matches by sound. Most share Curtis's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"courteous, well-bred"
"well-born, of noble birth"
"man of power on the hill"
"crooked mouth, wry-mouthed"
"spear ruler (from Gerald)"
"son of Jack"
"lawful, true to one's pledges"
"son of Cole"
"leek farm village"
"God knows"
"he gave, gift"
"home power, ruler of work"
"my God is salvation"
"the bear"
"maiden, heart"
"who is like God"
"helmet of will, guardian"
"supplanter's son"
"barn dweller, farm settlement"
"cheerful, optimistic"
Similar sound: These names share phonetic patterns with Curtis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Curtis.
Rhythm: Curtis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.