A while back I halfheartedly attempted to list out and classify examples of blockchain technology, the list got big fast and is still far from complete, link below, feel free to pilfer from it (I'll likely be pilfering from yours).

At the time my intention was primarily to keep track of the possible applications of the technology as opposed to specific companies, but I also tried to include at least one company for each function... http://techdecentral.com/megalist/

It brought to light that there is no established taxonomy for arranging/ordering things done with blockchain technology, something we need.