Aren't you going to ask about Braemar Jackets and Crail Jackets?

To jump the gun on those, I can give a small explanation:

They BOTH have the same "body" of an Argyll Jacket... the only difference is in the sleeves.

A CRAIL jacket has a very simple cuff, with a single button on the back side (pinky finger edge) of the cuff.

A Braemar jacket has the same "braemar cuffs" as a PC jacket, but with the BODY of an Argyll jacket.

As Matt Newsome pointed out on another thread, some companies interchange the names of some of these jackets (not quite sure why), but the PC jacket / Vest is always the same thing.