It appears to me this knot is really little more than a monkey fist with uneven numbers of rings in each wrap, so that it draws up into a spheroid thing like most monkey fists. The only difference is that for ease of tying, you make the middle set of wrappings going the opposite direction. I have become very busy with schoolwork, but it would be interesting to see if that structure can be generalized to form a "simple" monkey's fist (a tenative name for such a knot) that may be easier to tie quickly in hand. University classes end in a few weeks, so then i should be able to see what else you have found. This appears to be a very viable large stopper knot.