Is the #Subjects tag complete for Step 2?
Hello,
I would be happy to help. 
To the best of my knowledge, the Subjects tag is not entirely complete or entirely comprehensive, I’m sorry to say. In part, this is due to the tags being somewhat older, and less-often updated. Separately, since the majority of users follow along by third party resources (and because those third party resources are, rather inherently, organized by subjects themselves) I don’t know that the Subjects tag has traditionally offered a lot of utility nor gotten a lot of use.
At least at a glance, I show that the card total under the tag is notably smaller than the Step2 tag so I believe it to not be fully finished and polished. I can double-check that, though, and confirm this for you if you’d like. 
Please let me know if that answers your question, and if there’s anything else I can help with.