I see what you mean...the 32B in TX has a fiberglass exterior and the others from WI and PA are aluminum siding exterior. By looking at the Forest River site, current Cherokee TT's are aluminum siding.
I'm thinking that Cherokee had two separate manufacturing facilities. I'm guessing that the camper in TX was produced and sold for the west coast market and the aluminum sided campers were produced and sold for the east coast.
That's what my memory tells me, but sometimes I have trouble finding my way home!
BTW, welcome to the forum!
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63