When I met my ex, he folded jeans the way his mom had. They all had creases down the fronts of the legs, because she lined up the side seams and draped them over a hangar. I lay jeans out flat, fold one side over the other, and then fold in thirds, whith the pants leg hem folded up inside and the back pocket visible so I can see what is what.
I always folded T-Shirts like my mother did. I laid them flat, face down, folded them in half lengthwise, then in half top to bottom. My ex taught me to fold like they do in retail shops, so you don't have a crease down the front of your shirt, and can see the entire design in the drawer.
Just an example. Different people fold things differently.