Thanks for the question and sorry for the late reply. I was helping my twins who are in second grade with their poster presentation projects. Now it's Monday and it's nice and quiet at home so I can do my work.
To answer your question, actually yes, there are quite a few videos I found on Youtube that show k1 below or K1B (including the video I just made on your request).
Here is the Video on "How To Knit Brioche Stitch" which has K1B in it. Hope this helps.