There are no fixed boundaries, and different folks, different manufacturers use the same term for totally different finishes depending on circumstance.
There's no substitute for hours of surfing, checking different large and small builders.
I'd call this butterscotch:
because it has no ivory or beige or cream in it, but others call this honey.
I think most agree av AV 52 is butterscotch.
Then, what is this?
But then is this butterscotch blonde, or yellow blonde?
Terms aren't all that useful if no-one agrees what they mean.