While the list is not all inclusive, there are certain documents that you should start to gather if you are beginning your home search. Particularly with income such as paystubs and W-2's, lenders need to know accurate information to give you a preapproval that is going to help you be successful in your home purchase.
I put a document together that I hope you find helpful. Please click here and save for future use: https://drive.google.com/file/d/1d5U8_hT1Lw6pyAWUy0PfkQRGUW-rRdb2/view?usp=sharing