Pops seem to be ligs quickly sliding over a high spot on a bone, out of a depression in the bone, or in some cases maybe even over themselves (?).
When hanging extremely heavy OTS last summer I could get a repeatable lig pop. I’d kegel, then relax. This would reset the lig’s position so it would pop when I leaned back while pushing down on the weight.
IMO, pops are nothing to strive for. Don’t worry about the occasional pop. Deliberately doing a whole bunch of them would probably damage the lig.