Plugging my own thing: It is not a lot, but I have been compiling a design checklist for electronics design since summer.

Right now it is a tool for myself and my work, which puts a priority on being comprehensive; but the licensing is liberal and I’m open to input.

http://pcbchecklist.com

Simple things do not need to be documented. And heavy ones are something like trade secrets. There is low probability, that somebody might share their trade secrets with you. There are checklists from fpga vendors for pcb design: https://www.xilinx.com/support/documentation/user_guides/ug4... Chance, that you will produce the boards for systems with fpga by yourself, is very low.

Maybe Arduino?