Put a kitchen towel onto your paper and iron it on hot. The crinkles won´t disappear because when the fiber of the paper is broken, you can´t fix it anymore, but it looks a bit better when you...
I would try one of the speciality stores (cooking or a place like hobby lobby) or check out a supplier company on the internet.
white.
the best type is A4
Paper(s) made from recycled fibers are as good as paper made from virgin (non-recycled or secondary) fiber. One is not better than the other.