Sorry for the late reply, genuinly did not see it.
In terms of which categories currently exist, we have a thread (https://www.speedrun.com/de-DE/sonic_colors_ultimate/forums/mh4dx) here on this site, as well as on our speedrunning discord, which explains how categories get added to the boards.
As per most popular demand, the people running the game decided that the Collect-A-Thon on this game should not only include the Red Rings, but the S-Ranks as well, given there is now a percentage counter on the map menu.
Now that does not mean, there can not be an All Chaos Emeralds-Category like on the Sonic Colours-Wii boards in the future! As of now, nobody really just felt the need for the category/nobody played it and opening a board that is empty does not make sense either.
If you manage to get people to play the category you want to exist on the boards, by playing it yourself and showing it off to others, as explained in the mentioned thread, your chances are likely we will add it.
Subbaro
