I’m a lecturer in a creative subject, and in actual work my outfits are a variation on:
Wide leg cropped trousers, tucked in tee shirt or stripy top, trainers - in winter I wear slim fit jumpers, often slightly cropped so they just sit on the waist
Midi skirts as above
Midi dresses with either trainers or DM boots
A-line short skirt, with fitted jumper (skinny rib polo neck, crew necks) and opaque tights - I usually go 100 denier - and flat Chelsea bots
I really feel the cold, and have a load of Uniqlo heat tech under-layers, plus v-neck cardis in merino or alpaca knit. In winter I find M&S cashmere is really good.
Shops-wise I know which cuts suit my shape, which makes it easy. Cos trousers are my favourites, cardigans from Other Stories and Arket, dresses Warehouse, Zara, Topshop, Whistles, skirts Topshop, Monki, knitwear Whistles, M&S.
I’m done for summer now, but for WFH I was pretty much in jeans and t-shirts. I had one to one meetings with male students who I had to tell to put a shirt on, because they were in their beds!
(I’m a bit taller (5ft 6) and fatter (10/12) than you.)