Startup Sign in screen MacBook Pro - Strange option box says Home - Switch with options of Keyboard, Pointer, or Location. What is this? When I restart my MacBook I get the sign in screen or the Startup Sign in screen and lately a small window I guess it would be Called is sitting on top with its own x to close out but it is a  Strange option box that has a black back ground with white writing and it says Home - Switch  with 3 options under that have a icon and one says Keyboard, middle one says Pointer, and last one says  Location. What is this?
You have somehow enabled Switch Control, a macOS Accessibility feature.
Follow the instructions on the page above and figure out how to disable it, or configure it to something that may be useful for you.