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If you read the very first post in this thread, you will see where Tadkerson listed the different combinations that wil make sex links. Those lists are not all-inclusive. Some other breeds could work but there are so many different breeds you cannot list them all. And they will work for bantams as well as full sized breeds.
If you bought the black sex links from
TSC, they should be from full sized fowl, but I sure cannot tell you which breeds they used. I'd expect them to get as large as your other pullets.
I'm not sure what a CW is. I'll probably be embarrassed for not recognizing it when I do see what it is, but nothing jumps out. Many roosters will make a black sex link with the BR and many different roosters will make a red sex link with the SLW or the Delaware. Technically, you could make black sex links with the Delaware too since they have the barred gene, but realistically, you won't be able to see the spot. They make red sex links too so that is what you would go by, I don't think any rooster will make sex links with your other breeds. Part of your problem though is that unless you segregate the hatching eggs, you will not know which chicks are sex links. The other hens can give you chicks that look like the sex links. Again, look at the first post on page one of this thread.
Many people think that they are good layers because they are sex links. Not all that true. They are usually good layers because their parents are good layers. You can cross a RIR with a BR and get a black sex link that will probably be a very good layer. If you take a BR rooster and a RIR hen from the same strains and cross them, you will not get a sex link but they will still lay just as well. On the other hand, if you take RIR and BR from any strains that are not bred for good egg production, the offspring will porobably not lay real well either, whether or not they are a sex link. The sex links you get from the hatcheries come from strains that lay well, so they should lay well.
If you swap out a new rooster every couple of years and select your pullets to keep with your breeding flock so you select the best pullets, you should have plenty of genetic diversity. You can bring in new hens too if you want to, but as long as you select your breeders to have the traits you want, you should be OK.