Gimp is an image editor, but not a "photoshop clone" - a lot of interfaces and features are different. Photopha is a very near clone; all of my "muscle memory"

Gimp is an image editor, but not a "photoshop clone" - a lot of interfaces and features are different. Photopha is a very near clone; all of my "muscle memory" from photoshop works fine in Photopea, including must keyboard shortcuts. Everything is where I expect it to be. I don't think those arrangements of features are copyrightable, though.