TOD
We grew up on the name brands, but I couldn't tell you which was the most prominent one in our house.
In my California years I used to try the occasional "natural" one from the health food stores, but I never did a good job of stirring and recombining the oil and it was never very satisfying. Then a decade or so ago, I made a concerted effort to get it right. I like to low-carb it when possible, and the idea of "pure" peanut butter certainly appeals, so I bought Smucker's Natural for a while, and more or less perfected my technique:
Stir until your arm is ready to drop off. Dig down into the jar and do your best to blend the upper and lower regions together. When you can go no further without passing out, make the PB&J sandwich you've been craving and promptly refrigerate the peanut butter. Keep that jar in the fridge. If you did a decent job of it, the oil will not separate again. If it's too cold and stiff when you take it out to use it, open it and let it sit for five minutes and it'll soften just fine. Don't forget to re-refrigerate it. Sometimes as you get to the bottom of a jar, the peanut butter will seem drier. If you let that stay out and soften, it improves it. I think that's a result of our imperfect recombining techniques. Probably best to briefly re-stir it when we're halfway through the jar.
Several years ago my usual store Shop Rite started carrying the "Bowl & Basket" store brand of most foods. Some are duds, but they have "natural" peanut butters (both creamy and chunky) that are delicious, so those are my cherce now and I'm 100% happy with them.
Side note: I was in Trader Joe's recently and tried their equivalent "natural" which is labeled as using unblanched peanuts. I thought that sounded fine, but in fact, I didn't love the flavor. So, nice try, but I'm sticking with Shop Rite's.