I know it's not ideal, but this Chrome extension does the job.
Just assign a shortcut pattern to the extension to it.
I had 200MB+ of images and files in Cached images and files under Clear browsing data category in Settings. After running the extension, it went to 9.8MB after the page I was on finished reloading.
Just remember to select Automatically reload active tab after clearing data and check the box for Cache under Data to Remove.
Unfortunately, I think you'll have to rely on extensions to fill in the gaps. Like, I needed to get separate extensions to support shortcuts for duplicating tabs with full history or rearranging tabs.