I have seen some Amish online reseller websites, but I haven't done business with them personally to recommend them. You may have luck looking for a local store near you that carries solid wood furniture and ask to look at their catalogs. My parents have a mom-and-pop store and I know that many of their Amish suppliers (from Indiana and Ohio) have mission styles that can be special ordered in any wood, including quartersawn, and the catalogs show a wider selection of manufacturers' designs than resellers can fit on the floor. Some shops upload the entire catalog so you can look that way online too. The Amish traditionally don't have websites, but a few of their brands to google with quartersawn oak mission chairs: RH Yoder Woodworking, F&N Woodworking, Artisan Chairs. If you google those names you should be able to find some resellers near you who are representing their lines on the floor of their shops. You can also special order your stain; most workshops provide samples for the stores who represent them so you'd be able to see wood stain options in person vs. a computer screen. Good luck with your search - solid wood quartersawn oak should last you a lifetime, and then some!