When navigating to a <button> with role="switch", it will be pronounced as a checkbox. It is recognized as a toggle button or switch button by accessibility APIs for example, but it is not pronounced as such.
https://www.w3.org/TR/wai-aria-1.2/#switch does state "A type of checkbox that represents on/off values", but it is not a checkbox and has a seperate role. I think it should be pronounced differently.
https://www.w3.org/TR/wai-aria-1.1/#switch does mention "Role: ROLE_SYSTEM_CHECKBUTTON" which might be the cause, but it also states "Object Attribute: xml-roles:switch" which hopefully means thiscan be fixed.

Steps to reproduce:

1. Open https://codepen.io/erikkroes/pen/WNrOdWp in Chrome version 83.0.4103.116
2. Navigate to the example <button> with role="switch"

Actual behavior:

Button is announced as "Checkbox".

Expected behavior:

Button is announced as "Switch", or something alike.

System configuration

NVDA 2020.1 installed on Parallels. Chrome version 83. Windows 10.