There's a lot to see beyond just the factions' previews, but most of it is still u/c so that's why it appears that nothing more than infantry and cavalry will be fielded by each faction... there simply aren't screenshots yet.

As for me, my sigil shall stay occultus for now. Though I rather like the Bartix one. Hmm. Does anyone know where I can find it again? I can't seem to find it anymore.