Ctrl+Shift+V is great, when it works. Which it doesn't annoyingly often, such as Atlassian's Confluence wiki. So I paste and re-copy things in the URL bar all the time. Ctrl + L V A X
That used to work in Google sheets, but now it only pastes the last thing copied from Google sheets. Really frustrating.
In Windows programs another shortcut for unformatted text is Control Alt V where Control Shift V does not work
That's broken in Outlook 2108. Now they want you to paste (CTRL+V) and then hold CTRL and click on/navigate to the obscure icon for the paste variant you want.