Is there an included layout for the default US Keyboard, or would I need to define my own?

Is there a way to switch the default layout, or would I need to implement QWERTY as a layer?

I would like to be able to toggle between US and QWERTY, in case someone else needs to use my computer. I can stop and resume keyd as an alternative, but wondering if there's a more fluid alternative.

include layouts/dvorak

[ids]
*

[global]
default_layout = dvorak
layer_indicator = 1

[main]
capslock = layer(nav)
shift = layer(dvorak_shift)
rightalt = layer(control)
leftalt = layer(meta)
meta = layer(alt)

[nav]
k = left
l = down
o = up
; = right