There's discussion on the FB site:
https://www.facebook.com/groups/288460758594334By Schirripa. Maybe it's your thread?
Many companies and one-man 3d firms produce miniatures in similar scale to the GW 'heroic' 28mm.
Gamezone and MOM miniaturas have whole 28mm heroic production lines dedicated to the Empire. They may lack archers, though. I'm certain I'm missing one more Spanish company who do 28mm heroic in resin.
Fireforge's fantasy line is entirely in this scale. Their Northmen are somewhat plain, all with similar padded cloth outfit, and they might be better suited for Bretonnia. But with the excess Empire heads and arms from the boxes still sold by GW, they should be a good substitute.
Northstar fantasy line (Frostgrave & Oathmark) is a bit short, but I'd nevertheless check out their products. They're mostly bulky in the same manner GW is, and if you mount them on square bases with their round base intact, their height matches OK.
Then the 3d firms selling STL files: Highland Miniatures. Reptilian Overlord, Grimforge, LastSword come to my mind. There are more, check MyMiniFactory. Some also offer physical miniatures. I believe you should find someone in your town/county/region who prints these files for a reasonable price.
Perry, Warlord, Artizan, Foundry, The Assault Group and all others doing historical Renaissance miniatures work well in units of their own. Aesthetic views about if and when they can be mixed with GW minis vary. You can build Renaissance archers from the Perry plastics, or buy them in metal from The Assault Group or Foundry. I think Foundry actually manufactures the same metal Perry sculpts which were used for the 3rd ed Empire archers. They're a bit small, but work finely in a unit of their own.
Agree, when it comes to the aesthetic of the Huntsmen in special - a unit of hunters, in their non-military clothing - the GW Huntsmen box or the '92 metal Bergjaeger are hard to beat.
-Z