Global Land Cover 2000
This has not been tested recently; there are better and more current alternatives. Introduction to Landcover, and other sources of landcover data.
Download at https://forobs.jrc.ec.europa.eu/products/glc2000/products.php as a 35 MB file that uncompresses to a 650 MB file. Each pixel is 1/112 degree in size, about 1 km. There are also smaller files covering a continent or portion of a continent, but these might use a slightly different classification scheme. Your choice for format should be TIFF, then ESRI, then IMG. ESRI and IMG requires GDAL. You should probably subset the file immediately to cover just your region of interest.
Last revision 1/13/2021