well tier shifts are coming up soon, but the tier is pretty offensive at the moment, although bulky offense, balance, and hail are viable as well, stall has a tough time and will probably continue to have a hard time even after queen moves up to UU, theres simply too much that it struggles with atm (although i made a decent stall team during the last suspect test). Hail and Durant are allowed again, and cresselia was retested and banned again. Half of NU is also pretty viable in RU, which is pretty cool, mons like Tauros and Piloswine are more than capable of pulling their weight.
as for tier shifts, queen is probably going UU, and houndoom, zoroark, meloetta, and tornadus-i are around dropping range (with doom being the most likely, torn being the least likely because it might end up having the usage required for OU anyway).