In my somewhat limited experience, I think that recurves draw more smoothly than longbows, also.
I have also discovered that defining "smooth draw" is very difficult. Smooth to one person may not mean smooth to another.
To me, "smooth draw" means there is less friction in the way the bow feels when being drawn. My best analogy is like sliding your hand across a smooth surface and then sliding it across sandpaper. This is an extreme example, but that is the way it seems to me. I have heard some talk about stacking, but to me, this has nothing to do with smoothness of draw.