Well, I can tell you right now that every enemy in60-70%? I dunno for sure, obviously, but it's a really high percentage and every new encounter it was something I was expecting and worried about (as well as greatly disliked).Hemwick aside from the dogs does have a grab. At least one of the four generic villagers has a grab (the hand scythe-wielders). Not all bosses have "grabs" necessarily but most do have abilities that bind you in place, working to the same result. Big brick-wielding enemies have a grab, all hunters have Visceral Attacks, screaming ladies in Cainhurst have a grab, the ones you mentioned also have grabs.
You may just be better at the game than I am. I don't consider myself to have extraordinary reflexes by any stretch of the imagination and as with all Souls/Bloodborne games, the grabs are highly telegraphed.
Still, as mechanics goes, Bloodborne is the "grab" game in my mind. I would say Visceral Attacks really push that point home.
Wow, yeah, you're right, there are a lot more than I realized/remembered. I'm deep in the chalices right now and haven't been grabbed much recently in my game. I did find grabs pretty goshdarn annoying in the UCW; feel like they should be more easily parried. I'd be very interested to see video of how precise the grabs are.
However, the visceral attacks, like parry/ripostes, I don't think of those as grabs; they have a different flow and one doesn't necessarily follow the other; I really like the hunter vs hunter fights.