Yes/no.
GX is more or less the Land Cruiser Prado with more bling, although certain countries get a 3-door version of the Prado. Most Prados are somewhere between a GX and a Toyota 4Runner in terms of features.
LX is a blinged out Land Cruiser and is unique to Los Estados Unidos and Japan - I don't think they sell the LX anywhere else. The American Land Cruiser (like my 200) is usually higher on the food chain than what's sold in the rest of the world, as the rest of the world gets a V6 gasser or diesel.
There are also other various Land Cruisers sold throughout the world (namely, the 70 series) that we can't get here, which is a shame. I will own a Troopy 70 one day.