Such a list would be a serious violation of ICA by whomever prepared it. It is one of those things that you make your own list. Best way to do that is to look outside your area with companies you are signed up with in addition to in your own area. If company A is shopping client 3 in another market, you can hope at some point to see client 3 in your own market with them. Not always the case, but often enough to make it worthwhile. I go nuts here when I see a new-to-the-area chain open their first store and I KNOW I have heard it is shopped. Hopefully it is on my list so I know which company to watch for it.
Then, of course, at the end of the year there is often a fruit basket turnover of clients, so you get to reconstruct your list gain as probably 10-30% of clients move to new companies.