No, so its just one collection list to reference the other products. I also have a “size abbreviation” text field on the products, so that is the text that displays. See image below.
The big black button is not in the collection list. The big black button is just drawing from the current product. Then, below it is the collection list of the multi-reference field for sizes in my case. Then the links are just the link to the “current product” that the abbreviation is pulling from.
If you send me a share link to your project, I can dig in and get a better idea of where you are in the process. Here is how to send a share link if you haven’t done it before.