It's not anecdote, you can see them as world record holders in their respective categories.
Julius Maddox on the bench press
Andrey Malanichev squat
Kirill Sarychev bench press (until julius beat him)
The entire chinese weightlifting team (liao hui, lu xiaojun, to name a few)
clarence kennedy (clarence0)
westside barbell guys/disciples (Louis Simmons, Mark Bell, Matt Wenning, Brandon Lilly, etc.)
Ed Coan
Dan Green (Boss Barbell)
The entire California Strength team (oly lifters based in the east bay)
The methodologies that I know of, designed by some of the mutants above are The Conjugate Method (westside barbell), Sheiko (by boris sheiko), Smolov, etc. For less elite, but effective principles you have Jim Wendler's 5/3/1, the 5x5 method, and other variants of similar principles. I mean I'm no expert, I'm just a meathead who's pretty much lifted every day out of the year (except for days where the gym closed) prior to this SIP order for the past 12 years.