What? I think the prim Orion looks awesome and is on scale with stuff now being chunky. The old Orions were just so tall. The prim Thunderbolt is big, but eh.
But to the OP, what you might be finding-
Alpha Strike Lance Packs- these used the old IWM/RP sculpts and were good for what they were from that starting point. If you painted both up and based them, the only way you would find a difference was lifting them.
Primitive line- a backfilling of the earliest Omnis through a set of PDF-only TROs, this was a sort of soft reset (again, like Phoenix did) of the art/minis. You got things like the primitive Orion, Thunderbolt, Rifleman, Emperor, and others that took them to a more modern look (Orion) or got rid of good looks (Emperor) as well as offering alternatives to the designs that were Unseen (Rifleman).
Game of Armored Combat/Beginner Box/Reinforcements- The start of the art/mini revamp that took the many of the same well received digital designer/artists of the primitives and turned them loose. Originally these 9 designs (for 10 total minis) were only available through the boxes, but later were released as Inner Sphere Reinforcements w/o the box contents or fancy packaging. IIRC Reinforcements have only been through the KS, webstore, or Cons . . . mostly b/c they are not FLGS shelf appropriate. I THINK you can find them available on other webstores like Aries.
Clan Invasion Kickstarter minis- Here comes the glut. The Kickstarter blew out the stretch goals and IIRC was something like 45 Clan mechs (for 9 stars) and . . . 44? IS mechs . . . or was it 45 w/ the UrbanMech? 43? Anyway, a lot of lances plus the two ComStar Level Twos, a UrbanMech, and two reposed mechs to represent the legendary Morgan Kell and Grayson Carlyle. The base of the KS was the Clan Invasion box which featured 5 Clan Omnis and 2 Points of Elementals.
Wolf's Dragoon Assault Star- Released exclusively through Barnes & Noble- so buy it there rather than ebay- it features new Annihilator, new Blackjack 2, reposed Rifleman, Archer and Timber Wolf. Basically the Rifleman has a arm pointed down and the Archer & TWolf have their legs adjusted- I think they used the Pryde's foot position from a comparison.
And yet . . . we might be getting more plastics.
For Ironwind's part they have released everything from GoAC/Beginner the Locust, Commando, Wolverine, Shadow Hawk, Griffin, Catapult, and Thunderbolt with a announcement of the Awesome and Battlemaster coming IIRC. Outside of the box IWM did have a Wasp and Valkyrie though both had to be pulled at one point, not sure if they have come back. The Ostscout is the only one outside of that box that has come out from the KS IIRC.
