The body of teaching which arose during and shortly after The Reformation
That description makes me think of "protestant theology" in general--in which case the tag may belong on that question.
But further consideration of the wiki description leaves me wondering, does it really mean "The body of teaching" in the sense of "all protestant teaching" or, "the body of teaching known as Reformed Theology"?
In any case... what is this tag really about? Is it about Calvinist theology? My quick survey of questions with this tag make me think so. If it is, should the tag be made a synonym of calvinism? If it's not about Calvinism, what is it about? How should the tag wiki be clarified?
*I see the final paragraph of the question says "If this is scoped too broadly, let me apply it specifically to those denominations in the Reformed tradition" which actually makes that tag appropriate, but I think this question still stands