Sliding will always yield graining. It’ll look like long rows or waves running the length of the tire. Here’s an old Bridgestone YKC I had laying around the shop that clearly shows that:
Blistering usually only occurs on softer tires. I’ve seen it pretty often on MG Yellows/Evincos. I don’t have a photo of that unfortunately.
Of course there could be some confusion in terminology from one person to another as well. I’ve heard some people refer to blistering and graining as the same thing.