Yes.
There are some "meta" packages that install flights of packages. They live in the /usr/ports/meta/* branch of the Ports tree. MATE is a twig on that branch, with two meta-packages: mate, and mate-extras. The mate-extras package includes:
Code:
RUN_DEPENDS-extras += \
x11/mate/atril \
x11/mate/caja-extensions \
x11/mate/calc \
x11/mate/control-center \
x11/mate/engrampa \
x11/mate/eom \
x11/mate/libmateweather \
x11/mate/pluma \
x11/mate/system-monitor \
x11/mate/utils
For some additional info, try
$ pkg_info mate-extras.