Courtney sits next to 3 phonetic neighbors — Bortney, Corbin, and Cortney are the closest matches by sound. Most share Courtney's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Courtenay (place in France)"
"victory of the people"
"king"
"dark one, little dark-haired one"
"God has given, gift of God"
"hidden store, treasure"
"wolf power, strong guardian"
"strong, healthy"
"oarsman, rower"
"one who lives by a stile"
"companion, close friend"
"son of Jack"
"measured flow, regular beat"
"rejoice, hail, greetings"
"meadow of bent grass"
"dweller by the gates"
"son of him who abounds in furrows"
"legendary warrior (fictional)"
"fortunate, of good fortune"
"my judge"
"hay enclosure dweller"
Similar sound: These names share phonetic patterns with Courtney — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Norman French origins, giving them the same cultural heritage as Courtney.
Rhythm: Courtney is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.