I would like to point out that tying my knot does not involve the use of the bitter end of the line. Am I wrong to believe that the use or non-use of a bitter end to tie a knot is a determining factor in it's identification?
Tying or untying a knot without the use of the bitter end, is a distinct knot property which means that the knot is tiable in the bight (TIB), it has nothing to do with its identification.
Besides, there are usually more than one tying methods to form a TIB knot like yours.
For instance, try to form a 1050 harness loop, and just simply rearrange the loop legs. I think you''ll find an identifiable resulting knot.
One might claim, that the anacortes knot or the single dragon loop (correctly identified by Dave root and Wysper), is the midline version of a TIB 1010 bowline, so yes, it could be compared to the Alpine butterfly knot, (as both inline knot structures), as you correctly point out in your reply.
However, tugboat-like knots, are usually loaded as end of line loops, from the crossing knot side, exactly as you show in your video.
I'm of the view, that loading it from the loop side (tail), might be a more resistant to distortion loading technique, especially in heavy stress.
