Among the given painters, Kalyan Das was not a painter at Akbar’s court. He was Muhammad Shah's court artist. Daswant and Basawan were the famous painters at Akbar’s court. Abdus Samad was the famous painter in the service of Humayun, and was later patronised by Akbar, too. So, all the painters in the question except Kalyan Das were in the service of Akbar.