Switch: Interactive Board Layers by @balika011
Scene developer balika011 has published a website on which he is sharing the pictures of layers of the Switch Motherboards. The data is available for the original switch as well as Switch lite.
The developer credits KreativeDax for the pictures, and Shinyquagsire23 for additional help.
Nintendo Switch Boards and Schematics
http://balika011.hu/switch/ is an interactive website that lets you navigate the layers of the Nintendo Switch boards. Useful for tinkerers and the like! Hopefully the site will be updated with additional data (schematics maybe?) and OLED board if/when available.