If you like the North European theater there are several generic troop types that you can use in Scandinavia, Baltics, Germany, The Low countries and England:
Landsknecht foot
German Reiters
English/Scottish Foot and Horse
Generic infantry in knee length trousers and a doublet or breastplate
Several of the Foundry Seadogs would also fit to the ”general” appearance of the 1550-1600+ period. For Sweden and Northern Europe you have contineous war for the whole period:
Great Russian War 1554-1557
Northern Seven Years War 1563-1570
First Polish War 1563-1568
Russian 25-year War 1570-1595
Swedish Civil War/Sigismund War 1598-1599
Second Polish War 1600-1629
De La Gardie campaign 1609-1610
Ingermanland War 1610-1617
Kalmar War 1611-1613
Are you looking at Skirmish games or bigger games?