Using I can't describe myself as a Keyboard Ninja. But really wish to become him :)
For me personally, I 90% of the time in VSCode(here I'm using the keyboard a lot) or in Chrome, and here in the browser, I miss keyboard for some cases, like going to a specific tab on netlify dashboard, or some internal admin panels and etc.
Total Commander - oooh, how I loved to use it on windows, that really keyboards heaven. Right now on a mac I not using so much files operations, so probably that's why not using it.
Vimium-C - wow, interesting, installed for chrome will try to stick with it. Thanks for sharing it.
I was also thinking about a browser extension based on this component, where users can add custom shortcuts/macros where it's missing, but Vimium-C looks pretty good for that too
This will be off topic, but can you list your software that you use to make everything keyboard friendly?
I personally use Keypirinha as my launcher, Total Commander as my file manager, and Firefox with Vimium-C extension as browser.