There isn't such a list, and if there were one, it wouldn't include everyone, like the wonderful people on this forum who do excellent restorations. Not everyone who claims to do rehabbing uses the products or techniques that are recommended in this thread. Debi used to be a member of this forum and learned a great deal from us. There are very few sellers that I can recommend that always sell authentic because unless they get every bag authenticated or are experts on Coach, even some very good sellers sometimes make mistakes.
Rather than trying to only buy from a seller that restores, look at the condition of the bags in all listings. Some bags are in such good condition that they don't require rehabbing.
It is my opinion that the quality and suppleness of leather varies depending on the age of the bag and the style. There are some styles that have stiffer leather because Coach was trying to create a more structured bag. In most cases, in my experience, bags from the 90s and even into the early 2000s, have the softest, thickest and most supple leather; even better than the 70s and 80s that so many people rave about. The nicest leather I've ever found was on a 2001 Legacy drawstring.
We can help you narrow down a style. If you tell us the general size you need, we can make recommendations. Most vintage bags are lacking in pockets and lining. Generally the bigger vintage bags show more wear than the smaller ones because they were used more.
I recommend that you browse ebay, etsy, Tradesy, Bonanza, and any other selling site. Once you find a bag you like, you can ask for authentication in the AT thread here:
https://forum.purseblog.com/threads/authenticate-this-coach.889527/ If you ask, we can advise you about condition as well. Once you have found a bag you like and authenticated it here, you can also ask about condition and how to make it look new in the rehab thread here:
https://forum.purseblog.com/threads/coach-rehab-and-rescue-club.833400/