Long pants that can’t be jeans or have to many pockets. Collared shirt and a thing that goes over the shirt and keeps you warm. It’s woolen and soft.
When I buy clothes I just find a maniken that looks like a business guy and then I buy 3 pairs of what he is wearing. So I’ve got like 5 different outfits and 3 of each outfit and I rotate them. When I first started I wore the same thing every day like an npc.