An 11 speed chain is just that, KMC, Shimano, FSA, Sram, all the 11 speed are interchangeable. I tend to stick with lower cost chains, usually on sale. I notice no difference between models, like Sram 1170,1150, 1130, etc. Usually, the weight is the difference. I have found that some chains run quieter than others, but, I have no examples. Connex makes very good chains and quick links, easy to work with, but very expensive.
IME, Shimano drivetrain, 10 speed chains DO NOT work with 11 speed drivetrains, even with friction shifting. I guess you could use one temporarily, if absolutely necessary, and do not shift much.