About The "recent" List That Appears When I Right Click On The Taskbar

After using Windows 10 since 2018 I just now noticed this:

If I right-click the Notepad icon that's in my Taskbar, I get a list of files that I recently worked on using the Notepad. I get a Recent list for other icons in my Taskbar too, and some of the lists are rather long.

I can remove them from showing up but only one at a time. Is there a way I can remove all of them at once?

 

It's not that simple in Win10. You'll have to disable & re-enable the Jump List function.
Even in Win7 I just use CCleaner.

Jump List info.
https://www.raymond.cc/blog/clear-and-disable-jump-lists-in-windows-7/

 

I find this feature very useful but you do need to keep the jump lists pruned by unpinning individual items.