Not Wyoming, but as of last weekend:
Western ND - bucks are with does and defending their harems. Bucks were actively breeding does.
SE Montana - a mix. Some bucks were still by themselves and not really looking for does and some herds of does were still without a buck near by. Some herds had multiple bucks hanging out within the same herd and they all seemed pretty content with each other. Some herds had what looked like the beginning stages of some hierarchies starting to develop. Some bucks actively out cruising looking for does. Some bucks were actively defending their harems, but not being super aggressive yet. I witnessed no breeding.
I’d wager every day will get better until beginning of October when I feel like bucks start splitting off their main harem looking for unbred stragglers. But that’s just my experience. Ymmv