My MacOS productivity tools include: alfred (as someone already said), rectangle, bartender (essential for me since getting a notched MacBook), xbar (if you want easy access to custom info/bash scripts in the menu bar), itsycal, menumeters, cheatsheet (to help you learn all of the hotkeys), obsidian (which I have set to auto sync to iCloud across devices).
Each of these can be installed via 'brew install'.
Each of these can be installed via 'brew install'.