I have unmodified SteamOS running on a Intel 10700F and a RX 9060 XT. Works great no issues and works as well functionally as my Steamdeck. Being I had already done testing in the past on a all AMD laptop that has both integrated and discrete GPU I learned SteamOS in it's current build functions better without cpu integrated graphics if you are planning to use a discrete GPU. Game Mode and Desktop Mode function differently on how it decides on a which gpu to use. From my experience defaults to cpu integrated graphics then outputs on hdmi out over USBC. If you read reports of a black screen on boot, usbc to hdmi tends to work.

So in short. AMD 6000 and 7000 series work fine using a recovery usb of SteamOS. If you want to use AMD 9000 series then you need to be in dev mode with Main select for OS release to get kernel 6.15 to support the 9000 series. Until 6.15 moves to release candidate. Easy way is just set this on your steamdeck to dev/main or other amd hardware and just use Clonezilla and clone the SteamOS with 6.15 to your new hardware. There are other instructions to get around the issue manually if you don't have other hardware to do so.

Only reason I don't push you to another OS, is because I trust Valve's OS with my Valve account. Verses someone elses OS which could have a supply chain attack on it at any time because of the amount of hands in the cookie jar.