It's resin paper only. Different surfaces of course such as glossy, lustre and matt but essentially one grade only so not multigrade as RC B&W paper is.
One thing will surprise you on RA4 printing. The paper is relative cheap. Color optical prints also have special quality that digital prints don't have. When I printed color, I never touched that cyan dial on the color head. What the hell they put it there for?
Turns out a few days ago I stumbled upon a post from PE in a thread from long, long ago that touches on this question:
(there was a url link here which no longer exists)
I never said I would benefit from it. When doing black and white, I never liked RC paper. I liked the feel of fiber paper. It felt like a real print. And it didn't take that much longer as it did with RC. To me, there's nothing like fiber based paper.
I could just say "tough, there's only RC" but I won't. I can appreciate why people feel that there's something special about fibre but in colour you may find that RA4 is not so inferior. I cannot explain it but with RA4 it never seemed to me to be just B&W RC with colour added.
Unlike RC B&W where in most cases glossy seems to have the edge, I always found that lustre was the better surface.
Forget the fact that's it's RC just give it a go with an open mind. You might be surprised