Most of the other tabs like "modpacks", "mods", and "resource packs" communicate pretty effectively what is supposed to be posted within these areas. However, the content within these two different tabs often overlap and it is pretty unclear what is supposed to be posted in these two spaces.
If I was to solve the issue, I would just combine the content from these two tabs into a kind of Miscellaneous or Extra tab and then providing filters in this new space for "Datapacks", "Shaders" or anything else. I'm not saying that is the best solution but I personally think it would be a lot easier on both users and creators alike.
Let me know what you guys think below!