If Chick-fil-A, Aldi, and Ocean Spray was public, I would probably invest in them.
Chick-fil-A has the best food around. That's not even a competition, and their marketing is on point. The management aims to keep the customers happy and they do it greatly by training the staff to be the nicest people you would ever meet. Plus their prices are not cheap, which brings me to believe that the company is doing fairly well.
Next is Aldi, a German company. Going through their store is perfectly efficient, they don't waste space or your time with everything in rows and a super-fast check out. They mostly carry generic food, and have low prices so I don't believe their profit margins would be too high. They change the standard for grocers by having not the popular product but the cheapest. I feel like Aldi has done very well for itself and will probably do even better in the future as it continues growing.
Lastly, is Ocean Spray which I'm not entirely sure why I included here. I've heard Ocean Spray is made up of tons of cranberry farmers who combine as one. With their sleek design of their packaging I feel like they stand out from competition. And their dried cranberries are so so good.
What private company would you invest in and why? Do you agree with what I said above?