macOS has demonstrably more discoverability than Windows; Not only are shortcuts consistent across all apps, but the visuals of common UI elements are the same as well, so a new user will immediately know what does what, in different apps. Whereas on Windows, you have a multitude of menu, button, scrollbar etc. styles right out of the box, in Microsoft's own apps!
macOS also has a list of all mouse/trackpad gestures — complete with videos — in System Preferences. Likewise, all global keyboard shortcuts are visible in one place as well (Keyboard preferences, where you can modify and even create your own shortcuts for ANY app.)
Best of all however, you can click on the Help menu and just type the name of a command or action that you expect an app to have (for example a filter in an image editor) but don't know its shortcut or which menu it's under, and the unified menu bar subsystem will automatically highlight all matching menu items and their shortcuts for you:
Here in that screenshot I wondered about the ability to copy a folder or file's pathname, and the Help Search pointed it out to me! And it works in EVERY macOS app! Does Windows have anything which comes close to aiding in discoverability like that?
