B Rank
Going to delete the ones I think should stay or that I have no experience in to make a valid opinion and focus on the ones I believe should move up or down.
Conkeldurr (B down to B-): Ok so Conkeldurr I feel has become more and more irrelevant. Like...you see this thing in the mid 1500s cause that's where it works but after that its usefulness diminishes. Teams are for the most part either too offensive for Conkeldurr to keep up with it, or in the case of stall, can't hope to ever break it. It's role as a status absorber is not even that great either as any competent player knows not to just willingly throw out status effects when this thing is around. Too easily exploited and I think it should drop.
Lucario (B down to B-) I understand the premise of why this is here. It makes for a good sweeper, has solid priority, solid typing, etc. but when does this actually pull off everything it needs to do consistently? It only has benefits against frailer offensive teams and that's only the case of getting a +2 boost and over dependance on priority at that point. There are just too many threats that overshadow it for Lucario to truly shine and be useful to reflect its current rank. I guess I never seen it used well so maybe I'm just wrong about this but Lucario doesn't seem as viable as it's made out to be in this rank.
Raikou (B up to B+) Ok so I've been using Raikou a lot, and this thing is very underrated. I personally think it's best sets are the AV and Specs set which are fantastic on offensive teams that need a solid pivot to things like Thundurus and is pretty awesome on Rain Teams. It falls under a nice speed tier, respectable special bulk, and only needs to change one move generally (Extrasensory or Shadow Ball, pick your poison) to do what it's set out to do.
B- Rank
Alakazam (Mega) (B up to B+) Ok so every time this is brought up we go and back forth and come to the conclusion that it's B for some reason and arguments like "Well it's too dependent on Trace" are qualified as a legitimate point. It's really not that hard to utilize Trace as all it takes are a couple of good switches or even one to basically get what you need. The options are endless as well as from copying something like Regenerator to heal on the switch or something like Swift Swim to check opposing Swift Swimmers. Yeah it has some flaws like lack of priority, frail, limited to a single move set with only a slight variation, but this guy is so underrated it's disgusting. All M-Ala really needs is a pursuit trapper to truly function, and if it's behind screen support it's even more brutal. Encore is one of its best assets as it allows to slow down certain set up sweepers, such as M-Gyara and M-Ttar and proceed to KO them, or just allow your team some more turns to do what it's set out to do. I think this should move up honestly for those reasons alone outside of the other positive traits it has.
Alomomola (B- up to B) From the various people I have been discussing this with from time to time, people have been advocating this for awhile and some even want it to B+ but I think one step at a time is fine. Alomomola is just really good on stall, Regen Cores or always appreciated anyways as they provide longevity that stall always appreciates. Its massive HP allows it to have great bulk which just makes this a pain in the ass to deal with sometimes unless you're running some heavy duty offense, even then it's still going to be annoying sometimes. I've used this a couple of times on my stall teams with great success and I'm positive that B- is not a respectable rank for this. Move the fish up please.
Entei (B- up to B) Entei possess one of the most spammable moves in the game with Sacred Fire and the 50% burn on top of STAB is a huge thorn in the side of Offense, Balanced, and to a small degree, Stall, forcing a turn of cleric support to take place in most cases. Banded and Life Orb sets hit extremely hard and with Extremespeed in its arsenal and a solid speed tier for OU standards, it can make for a solid revenge killer or just spam the hell out of Sacred Fire. Entei is pretty underrated and a lot of better team builds utilize mons like Entei because the meta is so over prepared for the higher ranked stuff they forget monsters such as this. The ranks should reflect the viability of Entei a bit more.