I am sure it is the usual suspects but with a high degree of variance based on the lifter's preference and what they have access to. It is not like there is a magic combination. For this situation though you would have to assume it is throwing the kitchen sink at it to try to peak for that specific moment.
Yeah, I´d be curious to see what Thor was on, some people post what they claim to know top powerlifters cycle with and add leading up to a comp, but hard to know how reliable is the information.