Not Bob , but I can add with cadaver you regularly train ith the full spectrum, both individual items and combined items
The salt shaker method is ONE way of imprinting taught by a fellow, I think, in Oklahoma but there are other ways -- throw tubes, scent blocks, just setting it out and soliciting an alert when the dog notices it (and they will) etc.
We don't train one scent, then ignore the first and go on to the next -(maybe people do with drugs or bombs?) you will may set out multiple hides on any given day each a different variant. You may also combine them all in one location for a more representative *total picture*
WIth cadaver the *target scent* is really MANY diffferent nuances / variations of the SAME scent. blood, body fluids, tissue of various types, wet bone, dry bone, burnt flesh, adipocere (grave wax), mummified remains, dirty dirt, etc.- hair may be in the matrix but people have gotten into trouble training hair as a separate scent.....and then you have to ensure they don't alert on dead animal scent or the scent of any containers used in training. And not to alert on sewage, and some other scents of things that may be associated with people but that you don't want the dog to waste time alerting on.