Is there a shortcut to "Switch User" from the Lock Screen in macOS Mojave?

Let's say you lock your screen with Command + Control Q. Now, you want to log in as a different user, without using the mouse. It seems that this is possible if you press Shift Tab twice, followed by Tab and then Space. (Essentially, it brings the focus to the "Switch User" button, and then pressing Space selects it. I am wondering if there is some less cumbersome keyboard shortcut to do the same thing? --- Alternatively, is there a keyboard shortcut to Fast User Switch when already logged in? (I have searched for this and only found older articles, suggesting the use of 3rd party software).