>>724155867
The first one is just a celebration of the franchise and operates by the rule of cool, all the content in it is there just because it's cool it's there. The other two are prequels to Botw and Totk respectively, they are canon to the story of the games. Botw and Totk take place in a time long after the events depicted in Hyrule Warriors, however they routinely callback to moments from them.