All we have to go by as to what is open for the high hunt is what we see on page 17 of the 2018 hunting regulations. It simply names all the wilderness areas that are included in the high hunt. So it seems to me that ALL of each of the listed wilderness areas ARE included in the high hunt.
What may cause some confusion is that the boundaries for the high hunt are not the same as certain GMU boundaries, such as GMU 203 (Pasayten) and GMU 249 (Alpine). A person might think that the GMU with the same name as a particular Wilderness Area would have the same boundary, but they don't. For the high hunt you simply need a Forest Service map that shows the wilderness boundary.