I'm an Xbox gamer that enjoys JRPGs and collects physical. For the the XB1/Series S/X gen, I don't think there are any exclusives, unless there is some small digital only indy ones, or something only released in Japan. Across all gens of Xbox there are probably less than 10 JRPG exclusives that have been released in the west and maybe another 10ish that were only released in Japan. The OG Xbox for example only had two released in the west, Black Stone Magic & Steel and Metal Dungeon. All the rest are on X360. New and used copies of Blue Dragon, Infinite Undiscovery and Lost Odyssey are still cheap on ebay if you want physical copies, and those you can just put the disc in the Series X and game away.