Ok so this Eventer is starting to get schooled in Hunters

I'm pretty familiar with the types of classes (O/F, U/S, Eq, etc) and what they each entail. But now I would like to learn a little more about the divisions.
My first Hunter show is this weekend, at a non-rated schooling show our barn is putting on, and my trainer has entered me into Limit Rider as a good starting point for us, which in this show is 2'0" fences.
But I've noticed when I google "Limit Hunter" it normally pops up as a 2'6" fence course

So I'm confused! In the Hunter world, do they not have standard heights for each division name? I'm so used to Eventing, where Beginner Novice is always going to max at 2'7", Novice at 2'11", Training at 3'3", etc. Anyway, just trying to gain as much knowledge as possible into this new discipline!