XJ OEM sport seats: called bucket or 40/20/40?

Hello,

I need some help with a fairly newbie question

My XJ has seats like the one in the photo attached. I was about to order covers from Wet Okole, but they give me a ton of options for seat shape. I always thought my seats were called "bucket" seats.

Now I see that the Wet Okole site shows the 40/20/40 as the shape that looks most like mine (http://www.wetokole.com/JEEPCHERF-Half-Piping.html).

So what's the deal? Which seats does my beloved XJ have? What are they called?
Thank you so much for your time and help.
Alan

Thats a passenger side bucket seat.

The 40-20-40 would also have a cover for the console...which would not fit on a cherokee console.