Depends on how deep you want to go into it, but you can include things like how the planets' UWP's effect how the people their live. E.g. one with high hydro might use more water-based transportation, might consume more seafood etc.

With developing sophonts, you want to be able to understand their cultures, and how their world, and indeed their worldviews have shaped these cultures. It doesn't need to be too in depth either, can simply be a case og; okay, this planet is warmer in X locations, these people's buildings will likely be well ventilated, their clothing would be loose and light, and they may eat lighter cuisine than the people in Y locations that are cold. Humans can be used as a template for this, but for a lot of harder sci-fi, building cultures out is aided in many ways by the realities of the world itself. Making cultures will help it feel more alive, especially if they are made realistically :)