Mauser hump

[glock30]

you see how the outer edges of a Mauser Toggle has the more defined lateral bevels? Some are more pronounced, some do not have them at all, like some Banners do not have and the edges are flat. Does this have a name? It seems like the BYF or later WW2 have very pronounced edges, where all DWM's are sorta flat? The Mauser tofgle I found does not do Justice, there are some that are cut that it gives the mid toggle an almost round looking appearance about it. Can we call this the Mauser ridge? Or does this have a a name?