N.W. Some companies - e.g. RYR - have an abbreviated 200-NG differences course. This might be because they have the same/similar SOP's. Either way it is a local CAA approval. What is available for an individual might depend on which authority your licence is under.
T.P. Your licence carries all type ratings 3-900, but the airline you fly for will require a differences course which will include an LPC. This is common sense, but not a CAA jurisdiction. If you have access to a private B733/4 & a B737/8then you will be able to flit about to your as you see fit.