Depending on the framework (e.g., are the same subjects being rated, etc.), here are a couple of resources.
SAS Note and the MAGREE macro for more than 2 raters:
Compute estimates and tests of agreement among multiple raters
Gwet (2016). "Testing the Difference of Correlated Agreement Coefficients for Statistical Significance." Educational and Psychological Measurement 76(4): 609-637.
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