Must have a screen that is visible in bright sunlight
Want to talk about that requirement some?
That's a highly specialized requirement and it's a tough job for any basic business laptop. These models will do well outside, in the shade, but probably won't be wholly suitable for direct sunlight.
For true 'direct sunlight laptop screens' you're probably looking at some of the ruggedized industrial laptops. They're going to bust your budget and will add a few extra pounds for sure.