This is right up my alley because I'm CDO. That's OCD except with the letters in order, as they should be ;-)
When we bought our TT, I measured the width and height of the interior of the front storage. I then went to Walmart and found the isle of the Sterlite clear storage bins and found some that were just less than half the width and 1/3rd the height and bought 3. I can stack these 3 high, side by side and take up half the drivers side of the front storage and leave the other side of the drivers and the passenger half of the front storage for taller items and things we use more often.
In the totes I have awning lights, electrical plugs, extension cords and adapters in one, sewer hoses and fittings in another, drinking hoses, tubing and funnels for filling fresh water tank, pressure regulators, etc in the third.
The other half the drivers side gets the stuff we either use/set up as soon as we get there or don't always use. Stuff like the lawn mat, a easy up awning, etc.
Passenger side is reserved for stuff we use often but want to put in storage if we leave the campsite for a day trip. Grill, Coleman stove, lanterns, air compressor, drill gun, etc.
Good Luck in figuring out what works for you.