With my arthritis pain, I went through all different types of pillows trying to find something comfortable. After staying at Wyndham resorts we fell in love with their bedding. They offer them for purchase at
http://Wyndhamathome.com. They have a blue label line and a more deluxe black label line. The blue label is what is used in the resorts and quite nice! We have bought many pillows over several years, sheet sets and also the duvet and cover- love it! If you happen to own Wyndham timeshare you get free shipping and there are often sales. They also sell GE appliances and we got a great deal on a replacement microwave/convection oven for RV.
The pillows are made by Sobel Westex so you might check if they can be purchased from them too. They aren’t super expensive so might be worth ordering one or two to try out. They seem to last several years before I need to replace them.
Good luck finding something.
Vicki