Each presenter on the video is offering you a repeatable process that produces results. My suggestion would be to start with the one that fits you best.
For example if you turn mostly spindles go with the Lacer section. If you turn mostly bowls go with the Jordan section. Or pick the one that uses equipment most similar to yours. Like Mr. maker said, if you pick one and learn it then yo can try other techniques later on.
Mr dog has a real good point. Most woodturners won't offer their method as the only one since many other techniques produce results. In most cases they will present a proven method that is repeatable and produces good results. Further most presenters are aiming at broad audience: beginner to expert.
Less experienced turners often get overwhelmed with choices and breadth of information presented. Adult learners have a limited capacity to take in new information in a given time span. We need some down time for the mind to assimilate the new stuff into permanent memory and then were ready to learn more.
A major challenge of teaching beginning woodturning is to not teach them too much.
happy turning,
Al