This would / could be a long list - or a long discussion - and / or a whole new thread! Delighted to purchase one of your wagon bodies today and chat with the Brassmasters gang and Ian Pope / talk wagons generally. I believe you are covering the 1907 RCH 7 pl types, but 16'0, 6 plank, 4'0 high (or thereabouts) side and end door types would be high on my list, as they seem to be reasonably common? I assume they were still potentially built within the 1907 spec. The trouble is, apart from Gloucester which appear pretty standardised there were so many other makers and they all seem to be much more varied.