Selleck sits next to 4 phonetic neighbors — Sherlock, Selleck, and Kelleck are the closest matches by sound. Most share Selleck's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the hall or manor house"
"dear one, beloved by the pool"
"possessing unlimited power"
"of great stature, the great one"
"intelligence, mind"
"cold, icy in manner"
"victory of the people"
"Open land, wide expanse; one who ranges freely"
"one who lives near a spring or who springs"
"narrow strait, channel"
"of the highest class or quality"
Similar sound: These names share phonetic patterns with Selleck — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Selleck.
Rhythm: Selleck is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.