Can you hold a list of Id's as a SObject list data type?
List SDR_IDs = new List(new Map([SELECT Id FROM user WHERE UserRoleId = '00E6A000000UW7gUAG' and IsActive = true]).keySet());
Let me know. I guess more generally, what I am asking is what values can the SObject class hold? Is it only default and custom apex objects or can it also hold integers, booleans, IDs, etc.