The Polish-Lithuanian Commonwealth referee has been restructuring the listings for the trojaks to make it easier for users to find combinations of dates-subtypes.
One feature differentiating these coins is the combination of marks or initials of various treasury and mint officials (as in this earlier thread: Marks for Polish-Lithuanian Commonwealth, Jan II Casimir [solved] – Numista).
For the reign of Sigismund III, can we please add these:
ID - Jan Dulski, Crown Treasurer 1581-1590
IF - Jan Firlej, Crown Treasurer 1590-1609
HR - Herman Rudiger, mint tenant in Poznan and Bydgoszcz 1596-1598
HT - Hans Thake, mint official in Poznan 1598
MR (in shield) - Melchior Reisner, mint tenant in Lublin 1597-1598
SC - Stanislaw Cikowski, owner of the Bydgoszcz mint 1594-1601
VI - Valentin Jahns, mint tenant in Poznan and Bydgoszcz 1594-1595