Who ever writes Nintendo ES? That's dumb. And I agree when you see stuff like Nintendo NES, Gameboy Advance GBA and so on, it's a sales tactic in case a blockhead searches for a game title +system a certain way and the search tool doesn't catch all to grab it. I do it on my auctions on ebay int he body where I'll write 'up for auction here is the Nintendo NES game...' and it helps.

PCE would be PC Engine, so yes, there is a way to logically shorthand that one, just like how the Turbo Duo just gets called the Duo by people.

You may not like SuFami, but it's a legit Ninteno device: http://en.wikipedia.org/wiki/Sufami_Turbo
I don't recall people calling the SFC a sufami before.

Gameboy, Gameboy Color, Gameboy Advance.
GB/DMG, CGB or GBC, and GBA or AGB going by abbreviation or product code.

The GCN one never made sense but I did use it, people seem to forget it's product code isn't that bot DOL for Dolphin. A weirder one, gameboy micro, OXY. Pretty sure it's not made from zit cream.