Hey, i'm sort of new around the tier, but have been using an interesting offensive team with good success for a while, and there's some pokemons i've been using to mild/great success that i feel are worth nominating at least for B+ rank.
Aside from Steel Dragonite, flying heatran and dark gengar that i guess it's common usage around the meta, i've been using the following pokes to mild/great success:
Ghost Bisharp - Ghost Bisharp trades a dark and ghost resistance for immunity to fighting/normal and resistance to bug, which makes him from a mon that would flee from fighting types into a mon that actually prefers switching into them (bar scrappy mons). With the momentum it gets from switching in a fighting move, and since it's rare that fighting moves are followed by fire or ground as coverage, it's a safe bet that bisharp will be able to safely switch in fighting/normal moves and set up SD, that makes him quite able to sweep through some things, or either simply use it strong STAB's and life orb to revenge kill most things on the meta. There's also the particular utility of knock off that it's quite capable of crippling some things that depend much on items like Ghost Chansey as the best example.
Flying Magnezone - Same typing as steel zapdos, except slower and different coverage, althought it has better physical bulk and analytic that compensates over being slow, that make him a very decent switch in into some things on the meta and a slow volt-switch or revenge kill, and can afford to take quite some hits and will often be one of your last standing mons simply out of it's ability to volt switch through any major threat to him.
Steel Hawlucha - I picked him out of curiosity to see how it would do in the meta, but this was my biggest surprise since Steel Hawlucha is quite an unexpected killing machine with the ammount of dark and steel typings in the meta and a few grass types as well. Itemless to afford acrobatics and with simply high jump kick and iron head as coverage, along with SD, it's a simple win con that can instantly sweep through unprepared teams , or after it's checks are gone. Being weak only to electric and fire moves, it's quite excellent for a fighting type, because those are also not common moves on most things fighting types like to switch in like steel, rock and normal types. Even natural checks like Steel Zapdos can be outsped and 2hko, so Hawlucha from the moment it switches in it's an almost granted kill against most things in the meta, if not OHKO.
