I finally got this updo to work!
It’s called Infinity Bun, and you can also do it turned vertically and call it Figure 8 Bun.
I barely have enough hair to do it, hence the lopsided look.
It is made by making a normal coiled bun, but you have to have two complete coils sitting on top of each other. Then you take the top coil and flip it over so it sits next to the bottom coil. Then you wrap the extra hair -if you have any!- underneath at the base.
I like it because it is low, at the nape, without brushing against the collar annoyingly. Styles that sit low remind me of old-fashioned things like Little Women and Laura Ingalls Wilder, like this:
Also, you can do this style without brushing all of your hair back, still leaving your part visible, which some people like because it looks less tight and slick.
Finally! A description of how to do the infinity bun, that I can UNDERSTAND! Thanks – it worked!!