Tipster @TheGolox recently claimed that Samsung is working on Exynos chips for desktop. If true, this would mean that we might soon see another entrant in the ARM on PC space, alongside the Snapdragon 8cx and Apple M1.
https://www.notebookcheck.net/Samsung-could-soon-bring-its-Exynos-chips-to-desktop-claims-tipster-but-how-might-it-compare-to-the-Apple-M1.515546.0.html