All those protocols you mentioned CAN and have Been used with TRT (low dose NPP/ Deca for joint pain for example).

Running a mild low dose compound along with your TRT to enhance the effects is perfectly fine, as long as you're giving blood 2-3 times per year and getting lab work done every 3 to 4 months to make sure everything is good. I don't do it myself but I know plenty of old timers who do. Low dose EQ and Deca seem to be the most popular