I copied the knot in pencil onto a 9" square of paper. I wanted it to have an even more Celtic look when I was finished so I chose some "Celtic" colors: red, blue, green, and brown and added a few small circles for 'jewels'. I caught myself in time and was able to organize the tangles:
'Official' Zentangle tangles are GREEN.
Tangles that I designed myself are RED.
Tangles that other people have designed are BLUE.
'Official' Zentangle tangles : Avreal, Betweed, Chainging, Finery, Knase, Meer, Quib, Rain, Snail, Vega, Xyp, Zander (and Hibred, which is in blue).
Tangles that I designed : Chebucto, Copada, Ionic, Lamar, Many Moons, Prestwood, Seljuk, Zedbra as well as Ninja Stars and Screen, both of which are not linear tangles, but most square grid tangles can be used as a single row to make a linear pattern. Plus, of course, Black Pearlz; I can hardly do a piece without those!
Tangles that other people designed : Adente, Blake, Coaster, C-scape, Diamond Drops, Elven, Firecracker, Flez, Fohbraid, Japonica, Kandysnake, Paisley Boa, Puffle, Ragz, Snugz, Unyun, Wud, and Zewm and Hibred together in one section.