Photos and a floor plan with measurements would be useful.

Thanks for info. Consider installing adjustable height shelves in each recessed area, from side to side, as deep as 20-24 inches to fit whatever clear plastic storage boxes are available to you. Slide laundry baskets under shelves on each side. Install two closet rods in the remaining 48" space. You will still have a full 96" of hanging space. Tops on tops, bottoms on bottom. If you need space for dresses or long coats, end the bottom rod a few inches short.

If you can add a ceiling light to the closet, that will improve its function and looks enormously. Building codes in your area will specify what types of lighting are allowed in enclosed closets.

I would recommend hanging on either side (front to back) with shelving or shelving with shelves over for the middle. This will allow you to maximize the space and still have it accessible.