The ISRIC dataholdings contains a selection of (zipped) datasets that are available for download. These datasets are arranged by scope, global, national, region and other.
A wider selection of datasets, reports and scanned maps may be queried trough ISRIC's metadata service. Further, a growing selection of 1km resolution soil property and class maps for the word is available at SoilGrids1km.
Always quote citation when using data!