|There is no "cheat sheet" for drives. There are just too many of them from too many manufactures.|
Howerver, if you had put ATI drivers into Google it would have taken you directly to the AMD web site where is would have been abvious that ATI and AMD are connected in some way.
You employers are being wise in insisting you download drivers from the manufacures. Driverguide.com is only for dummies and there is no guirantee you are getting the latest drivers..