Canon EOS naming scheme on Wikipedia:
Yeah, sorry. Totally don't agree that the 5D line is "prosumer". It is extensively used by literal professionals in the wedding and portraiture arenas. There is no question that the 5D is professional. The 7D, while not as often used by professionals as a primary camera, is frequently used by professionals as a backup. Additionally, the feature set wise, the 7D has the closest featureset to the 1D line.
I have to agree with the manufacturer. I know a lot of pros use the 5D, it is a great camera, but it also extremely popular with consumers, especially here in Asia Pacific, which by definition makes it prosumer. Nothing wrong with that, it is an amazing camera.
As for the OP, I think 7D mark II as a name, works well.
By that logic, the 1DX could be classified 'prosumer'. There are many people on this board that own the 1DX, but aren't "professional" photographers. Hell, there are those out there(you know who I'm referring to ) that classify ALL 35mm cameras as consumer.
The 1 series is the pro body in Canon's line up. The 5 series can't also be pro it can be advanced or prosumer. Maybe the 5D3 is closer to "pro". The article isn't up to date.
Medium format and Large format folk are looking down upon us and laughing as we argue over some numbers!