Roscoe sits next to 5 phonetic neighbors — Rocco, Ross, and Romeo are the closest matches by sound. Most share Roscoe's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"roe deer forest, deer wood"
"remembered by God"
"little wolf, little hound"
"of Mars, warrior"
"God is gracious (via Eoin/John)"
"narrow (from Kyle's Gaelic root caol)"
"one who sets free"
"modern blend of Ty + Reese"
"Brook land, land by the brook"
"from the swampy land"
"modern invented name"
"descendant of the shouter (herald)"
"wanderer"
"invented modern name, no classical meaning"
"strength and help of God (combined from Ezra and Azariah)"
"hare land"
"narrow valley, mountain valley"
"flowing, running"
"hero, brave warrior"
"son of Ellis"
"slender, narrow"
Similar sound: These names share phonetic patterns with Roscoe — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Roscoe.
Rhythm: Roscoe is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.