I don’t know your budget, the IKEA Ektorp slipcovered sofa is rated most often in the top ten choices of best slipcovered sofas. As an aside, I have a client who could buy any sofa at any price. She has 5 Ektorps in her homes.

Here is a link which may help you:

https://www.mydomaine.com/best-slipcovered-sofas-5078370

I LOVE the "Dune Sofa" from Maidenhome.com. Tons of fabric choices as well as several different cushion and back options, and made in North Carolina. Great customer service and a great product for the money. You can get nice quality from Furniture Land South if you can find a style you like and a well made brand.

Smith Brothers of Berne is a great US manufacturer of quality upholstered furniture. Their website can tell you what retailers offer their products in your area.

https://smithbrothersfurniture.com/

We've been pleased with sofas we've had made from Bassett.

Though I haven't purchased anything from Maidenhome, I've heard some really good feedback about their sofas.