1: Javelineer fire support platform.
Armed with a size 2 minigun, a chainsaw, and a mount above the pilot's head for an additional weapon (In this case a gatling laser), the Javelineer boasts thrust vectoring quad jet engines that allow hovering and airborne deployment. You're all thinking "Why isn't the pilot protected?"
Because, if the pilot dies, an artificial intelligence takes over, this prevents the usual technique of sniping the pilot to kill a mech.
2: Enforcer Advanced Combat Hardsuit
Armed with an OT Hammer, an infantry railgun, and a shoulder mounted artilley gun, the Enforcer hardsuit bridges the gap between Power armour and Mechs. it has scaled down versions of the jet engines in the Javelineer for Airborne deployment.
3: Sprinter Scout mech
The sprinter Scout mech has an OT hammer and a large railgun for longer range combat. its long legs allow it to move into and out of combat quickly. it has more protection for its pilot because of this.
4: Goldsmith Combat Engineering Loader
The engineering loader uses a power claw and an auto-railgun to provide coverage for combat engineers. The power claw can also be used to lift and manipulate objects.
I'll add these to the OP as well.
lol j/k