Mobility within a warm up should address the skills performed in the workout for that day.
If something hits a problem area you may spend more time addressing that item.
There isn’t time to mobilize everything prior to a workout.
here are a couple episodes that address warm up elements:
Warm Up: Erin Cafaro-Rowing (Olympic Gold Medalish)
Warm Up: Brian MacKenzie Running Warm Up
Episode 339: MWod and Warmup: Olympic Lifting
Episode 40: USAW Oly Prep: Some New Hip Love /Psoas/Calves