That's a reasonable question but I don't think there is a specific answer. I personally would not use the term for anything 7/8" or smaller - more like 15/16" and up. I think "Shooter" refers to marbles that are bigger than 5/8" but no bigger than 3/4" so I'm not sure what to call marbles bigger than 3/4" but small than 15/16" - maybe just "big ones"? It's a real quandary. lol
I think these are both Cat's Eyes, maybe foreign. The white inclusion you see is a piece of oven brick. And bananas are usually associated with the Peltier marble company, and I do not believe either of these are Peltiers.
The first looks like a newer confetti style marble. The second is an old German cane-cut hand-made, an Indian I believe. The third falls among marbles known as West Virginia Swirls. It may be Alley or Ravenswood. The last one is interesting but I would need more pics to tell what it might be.
No, this is a Black Line All Red. The most common Blackies have the same color on both poles, with a (usually) much thicker black band around the middle.
His description of cracking and fragmenting grinding stones is pretty harrowing. I hadn't thought about that before but I sure wouldn't want to anywhere around when it happened - yikes!