To the OP – I’ve found there to be a difference between softshell type jackets, which are often quite warm, to windproof jerseys, which are often quite thin.
Sometimes you need to feel them to appreciate the difference.
For example, I have an Altura Transformer Peloton Jacket, which on papers looks sort of similar to the Gore Phantom 2.0, but the Altura is much thinner and more like a windproof jersey (i.e. very thin windproof front and front of arms, roubaix type back) and I wear it like one, whereas the Gore is quite a bit thicker, and cut differently, so I wear it more like a softshell jacket
Jersey-> jacket and windproof->softshell are all shades of grey, it’s not always clear cut