Thank you. That does resolve the issue of the polylines being drawn on top of the billboard.
However, the label that should be drawn on top of the billboard still looks terrible. I did need to set disableDepthTestDistance: Number.POSITIVE_INFINITY on the label as well otherwise nothing would be drawn. Why? How can I resolve this issue?
That information was useful. I hadn’t considered just creating and using a canvas element. I figured the label entity would be the way to go. It is interesting that it is harder to use then I thought it would be for this purpose.