There is a list, I don't know how "official" it is. ALPA does NOT publish a list and I doubt they keep one at all. I have the list. Many SCABS change their names, so it is hard to track them.

If you don't cross the strike picket line or fly struck work, then you will not be a SCAB.

Virgin America pilots are not SCABS, they may be other things, but not SCABS.