What is the difference between these four categories unprejudice non undiscriminators unprejudiced discriminators prejudiced nondiscriminators prejuiced discriminators?

The four categories you mentioned refer to attitudes and behaviors towards discrimination. "Unprejudiced non-discriminators" are individuals who hold no prejudices and do not engage in discriminatory actions. "Unprejudiced discriminators" may have no biases but still participate in discriminatory practices, often due to societal norms. "Prejudiced non-discriminators" hold biased views but do not act on them, while "prejudiced discriminators" both harbor prejudices and engage in discriminatory behaviors.