One final viability ranking update for Generation 9 Free-For-All:
Gliscor from A- to A: while its quadruple ice weakness is deeply problematic, and it can have troubles in a meta where every serious team is built to last hundreds of turns, Gliscor is still just an amazing anchor for any FFA team. It can set hazards, it can stallbreak with Taunt and Knock Off, it can setup with Swords Dance and become a terrifying menace, and can fit on a lot of team compositions that really want to have a Ground-type that isn't weak to opposing Ground-types.
Umbreon from A- to B: the Free-For-All metagame revolves heavily around the move Wish, both using it yourself to keep your team healthy and thwarting opponents from using it. Umbreon is a solid Wish user, but both Alomomola and Jirachi are better options in most circumstances. Given that it's more of a niche pick, we feel B rank is a better fit for Umbreon.
Roaring Moon to B rank. Most Dragon Dancers are outclassed due to Kyurem-Black being legal in the format, but Roaring Moon finds is niche in stallbreaking with Knock Off, Roost, and Taunt. It has four moveset syndrome, however, as it can only afford to run either Substitute or Dragon Dance and cannot fit any coverage. It can also use Jaw Lock to stop switching, although the fact that this is mutual can be a very big problem.
Moltres to C rank. Moltres is a fascinating defensive Fire-type, with some really good qualities and a lot of longevity. It offer a good check to a wide variety of threats, reliable recovery, and has some very useful move options including Will-o-Wisp, Roar, and Fire Spin for trapping. Pressure is a very good ability in Free-for-All, where PP stall comes up surprisingly often as a relevant strategy. However, Moltres faces fierce competition, most notably from Skeledrige which is the format's preeminent defensive Fire-type. However, as a niche alternative, Moltres earns a C rank.
Volcarona to C rank. In a format where almost every serious team carries a Blissey and an Unaware user (with Skeledirge being the most popular), Volcarona is an extremely inconsistent win condition despite its incredible power. We do feel it's powerful enough to merit a place on the viability rankings, alongside other powerful threats that must be respected but have significant consistency issues.
Gallade from C to unranked. Gallade is just too frail, slow, and unreliable to merit a place on our viability rankings. It is an enormous threat that must be respected, but as a serious choice for teammate it is utterly unreliable and inconsistent. There are significantly better choices if you want a destructive wallbreaker.
Breloom from C to unranked. Poison Heal is a fantastic ability, but Breloom simply doesn't have the bulk or typing to make it work. Its STAB combination is terrible, it can be PP stalled by many defensive walls, and it has 4 moveset syndrome so it can't even carry everything it needs.
Iron Moth from B to unranked. The big problem with Iron Moth is the lack of a usable single-target Poison STAB. Sludge Wave deals significantly less damage due to being multi-target, and this leaves Iron Moth very predictable and relatively easy to counter. Without Sludge Bomb to threaten poisoning, a lot of specially-defensive walls deal with it quite easily. While it is exceedingly powerful, it's just outclassed by better special attacking options that have usable secondary STAB's or other beneficial options.
Sylveon to unranked. Between Clefable and Scream Tail, Sylveon is simply outclassed by better options. In theory it can run a hybrid set that the others can't, but you have to stretch pretty far to find a case where you wouldn't be better off swapping it for one of the main fairies. We don't feel it can justify a spot in C rank.
And that's probably where the VR will be for the end of Gen 9. Given the rough start we had, the format has reached a pretty good place with some decent options and some flexibility in team-building. I would say I look forward to what the future holds, but I suspect it will be broken mega evolutions and volatile Z-moves. We'll cross those bridges when we come to them ;-)