Steelix can wall Koko and Rock CC Lycandusk, while having Sturdy allows it to always be useful regardless of matchup with Stealth Rock. It's also a very good Body Press abuser with Iron Defense. Another option is Rock Head with Head Smash and Double-Edge, which can catch off guard a lot of mons. It's still weak to stuff like Terrakion and no recovery so B/B+ should be fine.
Celesteela is a very solid special attacker, Flying Giga Drain and Steel Meteor Beam allow it to threaten both offense and balance alike, making it unable to be stopped by Blissey. Autotomize meanwhile helps its offense matchup very well. Definite should have seen more plays. A-
Speaking of Ninetales-A, these 2 work well with it. Even though Arctozolt has to settle with Electric Bolk Beak still, it can still put dents into unprepared teams, with Low Kick to target Ferro. Arctovish meanwhile has to go mixed to beat Slowbro, however Ice Fishious Rend is quite funny to play with. I'd put both B-/C+.
While not exactly the best pick, Ice Double-Edge can 2HKO even physically defensive Corvi, and it has Shard, Rock and Knock so not too shabby if you want a physical wallbreaker. C/C+
While not exactly underrated, Zydog turned out to be better than initially thought. Ground Espeed with Thousand Arrows and Dragon Earthquake can steal games, especially when it boasts a nice speed tier along with Dragon Dance as well. B+/A- since it still struggles to beat bulky walls like Slowbro and Hippo.
Definitely something I didn't see very much, however it put in work almost every game. It can check Terra and Lycandusk, provides an Electric immunity, its STABs are amazingly strong with Mega Kick and Dynamic Punch, the latter help it can muscle past some walls it should not otherwise with confusion. B/B- at least
While this mon is stopped by Ground, I think its best role is not an attacker, but rather Dual Screen, as it forces a Ground switchin frequently. Electric ESpeed and Explosion should work well. I do need to see this more to rate it though.
Surprisingly nowhere to be seen. Good against Lycandusk, Entei, Zydog, can handle Lucario and a lot of physical setup like Mimikyu as well. It also provides a switchin against Electric. Definitely could see more usage, but I theorize this to be around B.
Fire Body Press in sun slaps. Role compression with Rock and Spin all in one slot, what more could you ask for? B/B-
The Rhino brothers are bulky enough to survive pretty all the common unboosted physical attacks, even SE ones. Rhydon gets to use Double-Edge as well, which gives it some edge cases against its evolution. No recovery kinda sucks though. C/B-
FEAR on paper should be better, especially against pure offense, however Ground and Steel being quite common limits this strat quite a bit. I didn't get to try this in the end, maybe next time.