I feel like that's quickly being overtaken by Affinity Photo. One time fee, though you have to pay twice if you want a license on Windows and MacOS, but it's a closer approximation of Photoshop so you won't have to change too much muscle memory. It has better non-destructive layer editing as well. I found it crazy hard to do a layer style like desaturating a layer without "baking" it in.
 - https://affinity.serif.com/en-us/photo/
It's still under work of course, and hasn't reached the kind of UI maturity that Photoshop has, but it's getting there, and you can't beat their price either.