I find it easier to understand if you relate the pentatonic shapes to the CAGED shapes, so yes, minor pentatonic is Aeolian. As Jimmy says, the minor pentatonic and Aeolian scales are built on the relative minor, or 6th Scale degree of the corresponding major scale.

Bear in mind that the scales are fairly similar in terms of where the boundaries of dots fall. If all you looked at as just which dots went where, you could also say the minor pentatonic is built on a Phrygian, Aeolian or Dorian shape as you say.... :rolleyes:

The hardest thing about theory is that it tends to provide more questions than it does answers until you've absorbed quite alot... but trust me, the minor pentatonic is a minor scale with some notes removed... worry about the scale degree rather than the shapes...

Diatonic Harmony again - ties it all together....

Major, Minor, Minor, Major, Major, Minor, Diminished, Major....