broadcloth is heavier than the quilting cotton you may normally use-
shirtings are ok- but a lighter weight than 'regular quilting cottons-
all are usable---often if the cotton fabric is lighter weight than what we want you only have to add a lightweight interfacing to make it work. broadclothes have a *rougher* finish than the regular cottons but are fine for quilting. most any fabrics are usable- the only real thing to consider is that everything you use in a project can be cared for the same---as in- you don't want to mix fabrics that must be drycleaned with fabrics that get tossed into the washer.