The Cross Trail by Fabtron has a horn, but it is designed as a crossover saddle for English riders, so might be close to what you are looking for. I ride dressage and the balance on this saddle feels exactly like my dressage saddle and it puts me in a very similar position.
https://shop.fabtron.com/products/cross-trail-saddle
i got mine used on eBay for $600.
