Some images to add to this topic discussion.
The knot posted by ‘TotoZero’ (so called Sylvain’s knot) is simply another re-discovery of something long known and already in existence. Re-discoveries occur all the time, and indeed, the existence of the IGKT owes itself to a re-discovery of the ‘Riggers bend’ (aka Hunters bend) which had been presented by Phil D Smith in his ‘Knots for Mountaineering’ book.
Quasi Bowlines are ‘almost’, ‘not quite’, ‘seemingly’ (etc) a ‘Bowline’. Disqualifying features usually related to the nipping loop and the 2 legs of the collar which don’t re-enter the nipping loop from the same side.
In this case, the originally presented image (from TotoZero) is an eye knot based on a Crossing hitch (Ashley #206) + 360 degree loop.
There are a number of eye knots that are based around a Crossing hitch - some good, some bad, and some ugly.
Most had been discovered and presented by knot legends - Xarax and Alan Lee many years ago. One or two are my creations… (derived from corresponding ‘Bends’ and ‘Transpositions’).

