Thanks for the list. Regarding screenshots, I like macOS' built-in screenshot keybindings:

Command+Shift 3: Captures the entire screen.

Command+Shift 4: Captures a specific region (You have to select the area each time).

Command+Shift 4, Space: Captures a specific window.

Command+Shift 5: Captures a specific region (Remembers the last selected region).

Command+Shift 5 also displays a menu at the bottom of the screen that lets you select any of the screenshot options as well as options to record a specific window or the entire screen.

yup thanks for the reminder, I usually go with the app above because it allows to draw on top of the screenshot and to copy in memory (e.g. to copy and paste into some IM), e.g. adding arrows, text, lines, something I use for example to highlight areas of the screenshot

Same is possible with the macOS shortcuts. After taking a screenshot, preview is shown in the lower right corner. If you click on it, you can draw on top of it, and use Ctrl+C to copy it to the memory.

Hold down Ctrl when using these shortcuts to copy directly to the clipboard.

As covered elsewhere in these comments, Rectangle is the new Spectacle. https://rectangleapp.com/

thanks - looks like they chose a different set of shortcuts, that's a bit annoying after years and so much muscle memory

You can rebind easily. I find Rectangle to be much more lightweight than Spectacle