Alucard sits next to 4 phonetic neighbors — Alistair, Alastair, and Alaric are the closest matches by sound. Most share Alucard's Japanese cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Dracula spelled backwards (fictional)"
"manly, masculine (as variant of Drew/Andrew)"
"strong worker's son"
"modern American coinage"
"land beside the road"
"young man"
"open field, cultivated land"
"rhythmically invented name"
"city of Athena; city of wisdom"
"counsel, decision"
"divine mother goddess (Irish)"
"son of Jens (son of John)"
"from the Roman city of Lindum"
"smooth, soft leather (suede)"
"divine wonder"
"great peace"
"from the east, eastern settlement"
"one near the woodland clearing"
"ruler of the home"
"short form of Richard (brave power)"
"he will laugh, laughter, one who laughs"
Similar sound: These names share phonetic patterns with Alucard — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English/Fictional origins, giving them the same cultural heritage as Alucard.
Rhythm: Alucard is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.