Technically none but IMO the Maxon OD808 and Reissue TS9 are more similar and have more "air" for lack of a better term than a current production.
I love it and short of that I feel the next best option is an TS9 current Production or TS Mini in that order IMO but can't go wrong with any of them tbh.....
I feel like KSE popularized the Maxon resurgence because before they broke through, it was all about the TS808/9 pedals. It’s ridiculous looking back at it now. They are as close to each other in sound as you can get. Everyone says the Maxon doesn’t cut as much low end but I just don’t hear it.