One thing about the ruana, it can be made with 2 lengths of (handwoven) fabric, with a simple seam at the back.
Very versatile, I had one and wore it a while, but it was made of very harsh wool , and in the end I gave it to someone else.
I made a few of softer fibers, ikat dyed , woven, strips sewn together, very popular at the craft shows I was doing at the time.
I also have short cloaks I still wear, crocheted on giant hook…. Make one rectangle strip which is joined, one end attached to the side, leaving a hole, making a corner that hangs in the back, (or side).
I can undertake the challenge of drawing a diagram for the joining, and photograph an example, later, after I have tended to my morning chores.