‘Search Light’ is Like macOS Spotlight for GNOME Shell
This extension enabled you to get to harness the power of GNOME Shell’s search capabilities without being punted to a different screen.
Search Light can show any/all results the regular GNOME Shell search can as it’s the same widget, just floating above all windows. To control what kind of results you see for queries toggle on/off options listed in the System Settings > Search panel.
The default keybinding is ctrl + super + space. This requires more finger-flexing than macOS’s cmd + space or GNOME Shell’s stock super. You can now set your own keyboard shortcut from the extension’s settings panel, as of the latest update.
I like that the appearance of the Search Light interface is configurable, allowing you to adjust the height and width of the main UI, pick a background color (and opacity), and tweak the border-radius — you can’t do that with macOS Spotlight.