Comment by cosmic_cheese
7 hours ago
The closest I've seen to this are the ASUS ProArt cases/components, which lean toward a modernized, stealthy workstation vibe, as well as some cases from botique Chinese manufacturers like Streacom and Jonsbo/Jonsplus which also go for a sleek but more professional and subdued aesthetic.
The downside is that they're not cheap.
For motherboards Asus also have their CSM (Corporate Stable Model) series. A few of these are even on green PCBs.
https://www.asus.com/Microsite/CSM/