For what you’re looking for I’d recommend LavriCable power cords that are made from pure 5N silver and are an exceptional value IME. I don’t own their power cords but do own their interconnects, USB, and headphone cables and they excel at transparency and openness but with absolutely no brightness or thinness silver cables are reputed to have. I know members @charles1dad, @lak, and @guacimo10 own their PCs and think very highly of them so maybe they’ll chime in here to help out. Here’s a list of their power cords, and either the Master 20 or Ultimate should be more than fine for your use case.
https://www.lavricables.com/?s=Power
Further, here’s a post where a member mentioned above found the LavriCable PC superior to a much higher-priced Synergistic cable (very highly regarded BTW), and if you go to page 2 you’ll get some good insights from Charles1dad after he installed them in his system.
Again, given what you’re looking for and our other member’s very positive experience/feedback I would strongly recommend considering the LavriCable PCs. Hope this helps, and best of luck!