Oh those clowns are getting craftier. They would love to get anons on a wild goose chase hunting through 1099 pages.
The EO on Dec 21 was the Global Magnitsky one. You need to look at this sorted list
https:// www.treasury.gov/ofac/downloads/prgrmlst.txt
And then Ctrl-F to go down to the GLOMAG section. It is much shorter and you will note that most entries are companies with very similar names in more than one country.
Bottom line is that there are several different lists of Specially Designated Nationals. The site lumps them all together to make it easy for companies to check that they are not accepting orders from people/businesses on the list. But there are various different reasons for them getting on that list.
Other than the GLOMAG instructions above, anons should avoid these lists, unless of course, you can code up a script and import a list into a database that other anons could use.