All cones are cross wound. The thread forms a criss cross pattern on the cone/spool. Cross wound thread is meant to feed off the top of the cone/spool. As long as your vertical holder is allowing your thread to feed off the top of the cone/spool you are good. On spools that are cross wound and being used on a DSM the holder is often set horizontal, like on my Bernina. This way the thread path is still allowing the thread to feed off the top of the spool, as cones are so large you need a cone holder of some sort. Some people use a coffee cup and a safety pin or paper clip or fishing rod line holder to feed the thread properly. There aren't many threads that are stack wound which works best when the thread can feed from the side of the spool and this would be the setup for vertical holders on many vintage DSM. Some specialty threads are still stack wound like Superior Glitter holographic thread. Here is a good blog that explains it with pictures. https://archaicarcane.com/standing-at-a-crossroads-thread-cross-wound-vs-stack-wound/