These 14 files (picture) cant be changed with using a data pack to change the output for how many stairs you get out of them, from 4 to 8. They are saved under the exact same name as the default crafting recipe is. Every other stair variant can be overwritten to output 8 stairs when crafted. I've included two example photos of the .json files. The only way to ge the recipes to actually work is to disable vanilla datapack, and well, that's bad and not what I want to do.