Here is advice from someone who always brings too many clothes (slow learner). I have my Darian riding suit, including liner and electric vest. I only use one pair of gloves. Then several pairs of underwear/T-shirts, socks, riding boots, camp shoes (suitable for wearing to the shower), shorts, hats, (stocking cap for sleeping in the mountains), towel, pants, and long sleeves. I often bring old clothes that I can just toss out when dirty and lighten the load as I travel. If I run out I stop and buy some new ones, which I need anyway. I hate stopping at laundramats to do laundry, but sometimes it is necessary. The clothes all fit in my Ortleib duffel bag on the luggage rack along with the camping bag. I don't carry rain gear or rubber boots any more.
Flashlight, tools, bic lighter, tent, sleeping bag and pad, water bottles, insect repellent, duct tape, . . ..etc. Don't forget a cork screw for the wine bottle. A soft side cooler is handy too in case you want some cold beverages. They have ice at the campground. I have discovered that if I forget something I can either do without it, or simply stop and buy one (but that doesn't include the credit card). And, as discussed on another thread, a chair or stool is handy at Spearfish since conversations get started around some picnic table with limited seating. If you have your own chair you can put it as close to or as far from whomever you want.
Some others on the forum here are masters at camping - or at least masters at bringing everything you could ever need. Maybe they'll chime in here. We all choose our own level or luxury.