An inductive catalogue? I use the word 'catalogue' because, in your example of a list with two sequences, each item in the list was identified and available for sorting based on its ordinal in the primary 'index' and on its degree of conformity with the order of the partial or secondary index.

As a non-mathematician, I am taking a risk using the adjective 'inductive' but it does seem that you need a word implying an unbroken chain of logic describing and linking all members of a set, rather than terms for a sampling process or deduction.