I'll tell you what I find.
Firstly, I grabbed the Luhring Augustine 25year anniversary catalog, which they were handing out for free in the fall. Here are some of the amazing artists in the catalog.
Janine Antoni, Lick & Lather, 1993
Luisa Lambri, Untitled (Centro Galego de Arte Contemporánea, #11), 2008
Christopher Wool, She Smiles for the Camera I, 2005
Rachel Whiteread, untitled (library), 1999
Above images taken from Luhring Augustine website, here
Some artists that are not representing by the gallery but were in the catalog:
Felix Gonzalez-Torres, Untitled, 1991, Andrea Rosen gallery, here
Gerhard Richter, Working in the Garden I, 1966, here