I know that Fiora's ultimate benefits massive from Madreds Bloodrazor.. but what other champion abilities of ultimates benefit best ?

Wiki mentions:

'Champions who can proc on hit effects multiple times in quick succession do best with this item, such as Warwick's Infinite Duress and Renekton's Ruthless Predator, which can result in the quick destruction of health stacking champions or tanks that lack magic resistance. '

What are the other known best applications of this item ?

In particular, does Wukongs ultimate proc it multiple times ? or Garens Spin2Win ?

Shyvana hits twice with her Q. Jayce's W (hyper charge) is basically the same thing, since it hits 3 times in 1.2 seconds.

Garen and Wukong's spins don't apply on-hit effects.