Song For Sonny Liston is a masterpiece, personally I don't consider it in the "MK Blues" category at all, with this logic Junkie Doll is also MK blues, also Marbletown.
What is a blues is when MK tries to play the 12-bar thing, or 8-bar thing, so in other words, stick to tradition. In this case I must admit, it's lame.
You can imagine if I want to be this Knopfler historian breaking down his songs, at some point I need to discuss songs like Hot or What.
Okay, it's just a simple blues played by virtuoso players, with few prolonged bars to make it not exactly standard 12 bars.
Cool. In the words of the songwriter himself, have you got something else? I'm definitely not a fan of MK Blues.