In autumn and winter my father always wears a sweater under his jacket in combo with shirt and tie. Layering can be a valuable help against the cold.
For the business better orient yourself on black, gray or blue. Shirt button down and tie. In case of jacket, better a sporty.
So that’s one of my 100% virgin wool long sleeve, soft to the touch, V-neck sweater.
Source of inspiration: https://www.harmontblaine.com/