XFCE definitely does (although I ended up just using xfwm when I switched from Gnome2 - I had previously used openbox with gnome2 but xfwm did everything I cared about so was easier to just use the xfce default)
Note that if you want all your apps to have a consistent look (fonts, buttons, colours, etc), you'll need to use a theme that supports both GTK2 (e.g. for xfce and gtk2 and gnome2 apps) and GTK3 (e.g. for newer gnome apps, like latest evince etc).
I use Clearlooks-Phenix (used to be called Clearwaita), which was packaged for debian sid and testing recently.
Description-en: GTK3 port of Clearlooks theme
Clearlooks-Phenix is a GTK3 theme which is a port of Clearlooks, the
default theme for GNOME 2. Files for GTK3 correspond to significant
changes of Adwaita, the default GNOME 3 theme. Files for GTK2 come
from the unmodified Clearlooks theme.
I'm sure that people who actually care about window-manager bling would be able to find fault with it, but IMO it's a nice clean minimalist theme with no distractions or jarring colours or attention-grabbing graphics. i.e. it doesn't annoy me by calling attention to itself.