There are solar systems, galaxies, and universes, but what are those things called that the galaxies are in?

Question:

Answer:
it's THE universe

universes! Duh!

Are you talking about "local clusters?"

Local clusters are area of sky where galaxies are densely populated (relatively speaking)

the solar system is in a galaxy which is in the universe and beyond that your guess is as good as any body

Galaxie clusters

Galaxies and everything else is in the universe. Often galaxies group relatively close together and those are called "galactic clusters."

Galaxies form clusters.