I have created a lot of (Stone) mason villagers and leveled them to 3 to verify the terracotta stone. I have all the other 15 base colors and 14 of the glazed. I have gotten 100s of duplicate colors with the villages (that I ended ). But I have never seen the villages provide the orange (based) terracottas. I have also tried this on a few new and old (upgraded) seeds with experimental on and off. I have been doing for a long time on my beta seed. But maybe I am just unlucky.