Dru sits next to 4 phonetic neighbors — Drew, True, and Drue are the closest matches by sound. Most share Dru's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"vision, ghost"
"vision during sleep, aspiration"
"little raven"
"iron"
"three, third-born"
"island meadow"
"blond, yellow-haired"
"son of the sea (via Dylan influence)"
"slender one, the thin one"
"God is gracious (from Shawn/Sean)"
"Patrick's town, fighter's settlement"
"fictional Fire Nation prince name"
"God is gracious"
"great tide, sea wave"
"of the forest, wood dweller (via Silas)"
"supplanter, one who follows at the heel"
"peace and agreement"
"new (as prefix in Punjabi names)"
"son of the prince (elaborated form)"
"rock, harbor"
"little barrel"
Similar sound: These names share phonetic patterns with Dru — 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 Dru.
Rhythm: Dru is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.