Pretty much every window manager I’ve seen is highly configurable. You can find hundredths of ready themes or customize them yourself. Changing distros to get a nice desktop doesn’t make sense. Just install whatever you like and customize it. If you’re on a decent hardware just go with KDE or Gnome/Cinnamon/Mate. Default themes will vary but you get get to pretty much work/look the same. On a slower machine go with XFCE/Enlightement/Fluxbox or anything really. All or them will be configurable. Just look at some screenshots, find something you like and play around with it.