Earlier quoted context omitted.
iirc that just shows a toolbar with the different screenshot modes. You still need to manually select a mode, which is not as fast and intuitive as ShareX which combines most of the modes into one
Then you are back to the macOS key combo shortcuts, surely? Memorise the one you want and then it's comparable.
Edit: here's a quick demo of ShareX for people who haven't used it [1]. You can see me enter capture mode (via keyboard shortcut), which starts in fullscreen capture mode, then I hover over the calculator to switch to window capture mode, then I move it away to switch back to fullscreen capture mode, then I click and drag to do a region capture and release to complete the capture. You can also see the annotation tools at top that can be used during capture.
[1]: https://giant.gfycat.com/WellwornSizzlingIrukandjijellyfish....