They operated over many different media, but apparently not including pottery or textiles, with the craftsmen or artists apparently a mixture of slaves, especially Persians, captured in war (at least in the early periods), trained Turks, and foreign specialists.
This group of artisans worked across various mediums, but their involvement in pottery and textiles was limited. They were composed of a diverse workforce including slaves, particularly Persians captured in war, trained Turks, and foreign specialists.