Art of Shaving creams are just Taylors of Old Bond Street with a different label and a big price increase.
If they are made by Taylors, they are not made to the exact same formulation as the creams sold under the Taylors label, as they don't smell the same. I don't think there is a tremendous amount of difference in terms of how they lather.
If you enjoy the lemon fragrance, AoS lemon cream is excellent. One of my favorites next to Trumper's almond, which is what I've been using for the past couple of months.