The high-quality music video was a collaborative effort involving several creators: Raelaveire Mixing: Kururu Video & Logo: H2de 3D Backgrounds: Chibi ghost and Kawa Background & Collaboration
A list of Ollie's other (like "NEW[zom]BIE!!")
You can watch the full music video on the official YouTube channel.
Details on other with hololive members
【歌ってみた】ゾンビ (Zombies) - COVER by Kureiji Ollie Hatsune Miku. DECO*27•10M views. 3:28. YouTube·Kureiji Ollie Ch. hololive-ID Kureiji Ollie/Discography | Virtual YouTuber Wiki | Fandom