Photons don't have a well-defined physical size, so it's hard to compare anything to the size of a photon.
We had a rather contentious thread recently about the size of elementary particles, and whether they could in fact be zero-dimensional. But maybe it's best if we don't reopen that discussion!
About blobbiness, I believe that the current consensus is that the blobbiness is real at all scales, almost right back to the Big Bang. Some have suggested that, if current theories about dark matter are correct, the dark matter might be more evenly distributed, but this seems less likely now. We've even observed a whole galaxy that's almost entirely dark matter!
I may have to lie down too...
