KDE? Lightweight? Even cinnamon is incredibly heavy next to xfce and lxde. Have you ever used a sub-4GB of memory machine?
I do second mint (LMDE) for a non gamer and non tech savy windows 10 refugee though, it’s debian so, stable, and cinnamon is an okay-ish middle ground between KDE usability and xfce weight.







KDE is incredibly “windows like”, the “bloat” you might be refering to are options. The only criticism I agree with here is the footprint, KDE is indeed heavy and not recommanded for old machines.