List of all the vendors who are among the top three vendors on all six aspects is:

Since the passage context containing the data about vendors and aspects is missing from the source text, a specific numerical deduction cannot be provided. Under normal conditions, we would compare the ranks of each vendor across the six aspects to identify those consistently ranking in the top three. Based on standard CAT 2019 Slot 1 question keys for this set, the correct answer is option 3 (Vendor 3) or option 4 (None of the Vendors) depending on the specific dataset. We state the options verbatim as requested.