It sounds like you might be asking for an — but it's worth noting that BlackWing OS isn't a well-known mainstream operating system. You could be referring to:

if you want the coolest-looking desktop with deep UI customization.

: An official "Long-Term Servicing Channel" version from Microsoft. It is designed for mission-critical systems and is naturally debloated of "bloatware" apps like the Microsoft Store or Xbox, often yielding the highest FPS in benchmarks.