OP, have you had any luck finding sheets? Followed you from your pillow post as it looks like we are in the same market. Learned a lot from the comments which I greatly appreciate since I've been at a standstill because every road has led me to disappointment, similar to your experience. Curious what you have for your mattress if you don't mind sharing as well. More on reddit.com

If you want US-made only bedding, I would stick with Supima cotton since that will be the highest quality cotton you can get from the US. I've noticed that many 'Made in America' brands that market their sheets tend to either only use long-staple cotton or just say it's high-quality premium cotton without saying that it's Supima or extra-long staple cottons. Generally, though, if you look around at most US-made brands the vast majority won't just come out and say 'this is Supima cotton' they merely imply it. Long-staple cotton is better than regular short-staple Upland cotton, sure, but ELS (or Supima) cottons are far superior and are what you will want to go with if you want the nicest, longest-lasting sheets that you can get. The only brand I managed to stumble on recently that outright says on their product pages 'Supima cotton' is Wright Bedding, so I would start there, honestly. Good luck! :) More on reddit.com

The Kirkand Sheets at Costco are 100% cotton and are very high quality. King was only $89 I think. More on reddit.com

I agree it can get very overwhelming. And to further complicate things, “organic cotton” sheets doesn’t mean that they are necessarily GOTS certified although they often are. Coyuchi makes very nice, organic/GOTS certified percale and flannel sheets but they’re somewhat overpriced so always best to wait for sales. On the cheaper side of the spectrum, target Threshold, California Design Den and Ikea all do very reasonably priced organic, GOTS certified percale sheets. They’re all good no frills every day sheets. If you’re spending more than $100 on a set I’d recommend only buying from companies with a generous return policy that allows you to wash and use the sheets and still be eligible for full refund if you don’t like them. More on reddit.com