Unfortunately, the basket weave embossing from both GAHH and World Upholstery— and BMW— is much more shallow than what originally came on our cars, at least for the pre-‘74 seats.
I found the best match in that regard from SMS Auto Fabrics in Oregon. Unfortunately they are expensive, slow, and don’t make full kits.
In terms of kits, I believe World’s kit has one fewer pleat than the stock seats. That would bug me so I would go with GAHH.