Well, Henckel's for example had a 14 steps of hollowing between zero and the maximum, you can see it in the wiki. I'm not sure which number corresponds to say 1/4 hollow, 1/2 hollow, or 3/4 hollow which seem to be often referred to nowadays.
I am probably wrong, but I usually call anything with dual concave grid a full hollow. I think I have one razor in the classifieds which is something like 1/2 hollow, at least judging from what Dovo considers under that - see if you can find it as there's a profile photogaph.

The more hollowing the thinner the edge. and at some point it get's kind of flexible and you can feel that. For example Dovo's Prima Klang model is extremely hollowed, their standard ones are more stiff. I don't think there really is a "normal" hollow, I guess if there's one that would be either the most Dovos or the most TIs as these are pretty much the only current manufacturers.
But TI's hollowing is a bit more than Dovo's.
Your c-mon is likely 5/8 and I'm not sure whether your wostenholm is also that or is wider.

Full hollow in 7/8 is not too common, I guess Filarmonica 14 is probably the most common example of these. 8/8 full hollow is even less common - out of about 300 razors that I've seen ther were only 8/8 full hollows and probably that's why I've kept them both for now, even though this size is a bit too large for my taste.