Hail has two cheatsheets, describing the two data structures in Hail: the Table and the MatrixTable.
Tables are the Hail data structure for one-dimensional data. You can create a Table from TSVs, CSVs, sites VCFs, FAM files, and Pandas DataFrames.MatrixTables
MatrixTables are the Hail data structure for two-dimensional data. You can create a MatrixTable from VCF, BGEN, and PLINK files.