Lots of good ideas, that I definitely need to apply in my shop. I like the idea of "one-deep" designs, like the door that is one can deep to close onto a one can deep shelf. Could take that one depth further. Make a three section can storage cabinet: one-deep cabinet on the wall, next one-deep section hinged on the right with piano hinge, outer most one-deep section hinged on the left with piano hinge. When open you'd have two sections swung out and access to all the sections. Or just open the first section and have access to the second section. Instead of latches, set strong round magnets into the frame sections so when closed the magnets holds the sections together. Could make the hinged sections open frames without door panels, with can retainer straps so when open the cans are accessed from either side. Even when fully closed, the outer most section containing the most often used product can be accessed. Two of these side by side would store a LOT of cans in a space 24" wide by three to four shelves high with direct and easy access to all the cans at once.
In my new shop build, the space behind the hinged side of the service door may be the perfect spot for this. The wall space is about 18" wide and because of my shop desk just inside the garage the door when open maintains a space behind it only suited for something narrow. I can make a can cabinet to fit that space which when open will be a easy access to all the cans at once.