It’s somewhat buried in there but I’ve been using the Ianknot for near on 20 years now. It’s just a regular knot but it’s faster to tie than anything else.
The key detail is to not end up with a granny knot. The way you tie your initial overhand knot needs to match so that it sits correctly and doesn’t come untied.
https://www.fieggen.com/shoelace/ianknot.htm
https://www.fieggen.com/shoelace/grannyknot.htm