I'll go against the grain here and suggest Kubuntu. It's an official variant of Ubuntu which swaps out the GNOME desktop environment for KDE Plasma. KDE feels much more Windows-like than GNOME, so it's a great migration option for Windows users.
KDE also really focuses on creating a cohesive desktop environment, much more than other DEs. There are over 200 applications built specifically for KDE (https://apps.kde.org/) which try to maintain a common look and feel. You can of course run any Linux application on KDE, but there's something quite nice about having applications built specifically with the DE in mind.