He's mentioned in podcasts how his training has developed. He was coached by Jason Mannenkoff early on and then Joseph Franzo (Joey Flexx) and his current training is an amalgamation of those and previous training. He has then taken the Ed Coan approach and just basically repeats the training with the aim of adding 2.5-5kg to each lift. It is pretty standard stuff, linear periodization, top singles, bench 2-3x per week (1 heavy, 1-2 rep work variation), squat 2x (1 heavy, 1 rep work variation) per week and deadlift 1x I believe.
He's also discussed his PEDs cycles, typically 12 weeks with test base (125-300mg), first 6 weeks anavar last 6 weeks anadrol ~50mg. He normally comes off between cycles but for this prep remained on since quick turn around between meets.
He is also obviously a genetic outlier, as a natural powerlifter he was the best at the time and set significant new records and this trend has carried on in his enhanced carrier to no surprise.
The more important variable you can control and should concern yourself with is your individual response to training and drugs.