Simple List: Just a list containing an entry in each line
Runtime File: A list read in runtime (not loaded in memory). For supporting big lists.
Case Modification: Apply some changes to a list of strings(No change, to lower, to UPPER, to Proper name - First capitalized and the rest to lower-, to Proper Name -First capitalized an the rest remains the same-.
Numbers: Generate numbers from X to Y using Z step or randomly.