AFAIK, not the Golden Fleece. Back in the late 90's Brooks Brothers had a high-end section, very short lived, which was on the 6th floor of the 346 Madison main store. Isaia was the maker for its suits in this line. There was no particular name for this line, other than Made in Italy. It was not the Golden Fleece line. There were also shirts and ties and such.
I have a suit from this line and it's one of my favorite.
Back to the OP, clearly from all the different posts there is no consensus on what or who makes the best label. Many particular styles (slim lapel, unpadded or minimally padded shoulders...etc) works on some people and not on others. Each individual body is different, and what's sad is for the wearer to blindly subscribe to some internet choice. For instance, somebody with a droopy shoulder who insist on wearing non shoulder padded jackets.